Perform the operations, $111-3(9-3)$.

A. $969$

B. $81$

C. $648$

D. $93$

E. $75$

A. $969$

B. $81$

C. $648$

D. $93$

E. $75$

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# Month: June 2018

## Distractor

## Solution Steps

## LaTex Array

## Pre-definer

## LaTex Coder

## Conditioner

## For-Commando

## Talker

## plotter

## transformer

CAFA Automatic Item Generation

Perform the operations, $111-3(9-3)$.

A. $969$

B. $81$

C. $648$

D. $93$

E. $75$

A. $969$

B. $81$

C. $648$

D. $93$

E. $75$

What is ${8} \dfrac{1}{5} - {7}\dfrac{4}{6}$?

A. $ {4} \dfrac{16}{30}$

B. $\dfrac{16}{30}$

C. $ {3} \dfrac{16}{30}$

D. $ {2} \dfrac{16}{30}$

E. $ {1} \dfrac{16}{30}$

A. $ {4} \dfrac{16}{30}$

B. $\dfrac{16}{30}$

C. $ {3} \dfrac{16}{30}$

D. $ {2} \dfrac{16}{30}$

E. $ {1} \dfrac{16}{30}$

Find the solution to the following system.

$ \left \{ \begin{array}{cc} {y}={5}{x}+{25}\\{5}{x}-{4}{y}={-40} \end{array} \right. $

A. ${x}={5}, \;{y}={-4}$

B. ${x}={4}, \;{y}={5}$

C. ${x}={-5}, \;{y}={4}$

D. ${x}={-4}, \;{y}={5}$

E. ${x}={-4}, \;{y}={-5}$

$ \left \{ \begin{array}{cc} {y}={5}{x}+{25}\\{5}{x}-{4}{y}={-40} \end{array} \right. $

A. ${x}={5}, \;{y}={-4}$

B. ${x}={4}, \;{y}={5}$

C. ${x}={-5}, \;{y}={4}$

D. ${x}={-4}, \;{y}={5}$

E. ${x}={-4}, \;{y}={-5}$

Round the number $21.551$ to the nearest hundredths place.

A. $21.54$

B. $21.56$

C. $21.57$

D. $21.53$

E. $21.55$

A. $21.54$

B. $21.56$

C. $21.57$

D. $21.53$

E. $21.55$

Which of the following is equivalent to $\dfrac{4}{7}$ ?

A. $\dfrac{5}{8}$

B. $\dfrac{8}{14}$

C. $\dfrac{8}{11}$

D. $\dfrac{1}{28}$

E. $\dfrac{7}{4}$

A. $\dfrac{5}{8}$

B. $\dfrac{8}{14}$

C. $\dfrac{8}{11}$

D. $\dfrac{1}{28}$

E. $\dfrac{7}{4}$

What is $4+9$?

A. $12$

B. $13$

C. $15$

D. $16$

E. $14$

A. $12$

B. $13$

C. $15$

D. $16$

E. $14$

When there are $9$ points on the circle, how many triangles can be formed connecting three points?

A. $168$

B. $504$

C. $729$

D. $252$

E. $84$

A. $168$

B. $504$

C. $729$

D. $252$

E. $84$

What is the area of below rectangle with base is 4 and height is 9?

A. 34

B. 33

C. 37

D. 36

E. 41

A. 34

B. 33

C. 37

D. 36

E. 41

Consider the following scatterplot of midterm and final exam scores for a class of 18 students.Which of the following is incorrect?

A. The coefficient of determination here is positive.

B. Students who scored higher on the midterm exam tended to score higher on the final exam.

C. No one scored 90 or above on both exams.

D. The same number of students scored 100 on the midterm exam as scored 100 on the final exam.

E. The scatterplot shows a moderate negative correlation between midterm and final exam scores.

A. The coefficient of determination here is positive.

B. Students who scored higher on the midterm exam tended to score higher on the final exam.

C. No one scored 90 or above on both exams.

D. The same number of students scored 100 on the midterm exam as scored 100 on the final exam.

E. The scatterplot shows a moderate negative correlation between midterm and final exam scores.

Emily is experimenting with transformations by drawing the original triangle with a thin line, and the transformed triangle with a thick line.

Which of the following is*not* true about this transformation?

A. The transformation for a triangle includes a rotation

B. The corresponding pairs of sides are equal in length

C. The transformation for a triangle includes a translation

D. The corresponding pairs of angles are equal

E. The corresponding pairs of segments are parallel

Which of the following is

A. The transformation for a triangle includes a rotation

B. The corresponding pairs of sides are equal in length

C. The transformation for a triangle includes a translation

D. The corresponding pairs of angles are equal

E. The corresponding pairs of segments are parallel