The correlation coefficient (r) between the number of volunteers x and the number of bags of
trash collected y is 0.654.
what percent of the variation in the number of bags of trash collected can be explained by
differences in the number of volunteers?
42.8%
34.6%
572%
65.4%

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?