18. the scatter plot shows the study times amstudents. how long did the person whostimes and test scores for a number ofson who scored 81 study? 100 ltest scoresa. 50 minutesweb. 81 minutesc. 16 minutesd. 100 minutes1020 30 40study time (minutes)50 x

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

Acar loses a quarter of its value every year. it is originally worth $35,000. to the nearest dollar,how much will the car be worth in 8 years?