12. Given the function f(x) = ax^3 +bx-1, and f(2)=3, and f(1) =7/4
Find the value of (-4a).

Yvaries inversely as x. y =12 when x=5. find y when x=4

What is the distance from (–3, 1) to (–1, 5)? round your answer to the nearest hundredth. (4 points) a. 3.60 b. 4.12 c. 4.47 d. 5.66

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?