Please help!! What is the experimental probability of drawing a red marble, given the following results?

blue: 8
green: 5
red: 7

a. 7/13
b. 13/20
c. 7/20
d. 7/8

Guests at an amusement park must be at least 54 inches tall to be able to ride the roller coaster. which graph represents the set of heights that satisfy this requirement?

52 cm radius = diameter = area = circumference = circumfer

Which value of y will make the inequality y< -1 false?