Translate the verbal expression into an equation and solve it? show all work.
the difference of twice a number and 7 is 9.

If n stands for number sold and c stands for cost per item, in which column would you use the formula: ? a. column d c. column f b. column e d. column g

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions.

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.