What is the value of the function f(x)=3(4-x) when x=7? 1. 332. -93. 94. -21

Solve the equation. 2x - 8(x+1)= 6(2x - 3)

Suppose 38 lbs of coffee beans are required to produce 2 lbs of farmer's coffee. how many lbs of coffee beans are required to produce 309 lbs of farmer's coffee?

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?