Please Help with 31 and 32. I am really confused. Will Select Brainliest Answer.

C, D

Step-by-step explanation:

31 - use the Pythagorean theorem to find the distance

a = 45

b = 28

plug in values

c = 53

answer choice C

32 - non linear functions are functions that aren't straight. if a function has anything besides a constant or an x variable to the power of 1, it is not linear

A - this is linear because -18 is a constant

B - this is linear because it only contains constants and an x variable to the power of 1

C - this is linear because it only contains an x variable to the power of 1

D - this is not linear because the x variable is on the bottom of the fraction, so x is to a power of -1

answer choice D

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24