In a given class room, the numer of girls is ten greater than the number of boys. If the ratio of the number of girls to the number of
boys is 7:5 then find
a. the number of girls
b. the number of boys
c. the total number of students​

your answer is the last one

step-by-step explanation:

divide the length of a'c' by the length of ac to get a scale factor of two

& then reflect vertically (over the y-axis)

so your answer is dilation by a scale factor of 2 followed by reflection over the y-axis

what i would say the best answer is a. 40.5

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)