Jen solves the equation 100-1/2x=92 to determine the number of questions, x, she answered incorrectly on a test. she began by subtracting 100 from both sides, then multiplying both sides by -2. which best describes the accuracy of jen’s work?

subtracting 100 from both sides

Step-by-step explanation:

100-1/2x=92

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6