Find the coordinates of the midpoint of a segment having the given endpoints. q(-0.4, 2.5), r(3.5, 1.5)

The probability of winning something on a single play at a slot machine is 0.11. after 4 plays on the slot machine, what is the probability of winning at least once

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great