A mathematics professor created a test that was supposed to be mostly easy except for two challenging problems. The scores of the students are shown in the dot below what was the most common score

The most common score is 89.

Step-by-step explanation:

The dot plot is attached to this question with frequency on the y-axis and the test scores on the x-axis.

From the image attached for the dot plot, the dot bar with the highest frequency is the one with a score of 89. Therefore, 89 is the most common score as it has the highest frequency.

Hope this helps!

b

step-by-step explanation:

given

- 2 (3x + 12y - 5 - 17x - 16y + 4 )

simplify the parenthesis by collecting like terms

= - 2 (- 14x - 4y - 1) ← distribute the parenthesis by - 2

= 28x + 8y + 2 → b