Which is cheaper 20% off the original price of $19.99 or 10% off its original price of $17 for a book

Does anyone know how to calculate the final grade in a class?

Solve - 2 (t - 1) = 18

Solve 4 (2x-3) + 4=8x-8

Slove the following equation for y: 5x-y=4.

You are allowed to omit two out of the 12 questions on a quiz. How many ways can you select the questions to omit?

A satellite television provides charges 39.95 per month for service. on demand movies can be rented for 3.99 each. broadcasts of special events can be rented for 49.95 each.

In a department store he finds a square rug that has an area of 9 m2. How many of those rugs are needed to cover an area of 36 square meters?

Using complete sentences only, describe how to find the volume of a cone.

If y varies directly with x, and y = 7 when x = 6, what is the constant of variation?

How many cubic feet of wood are needed to build a solid door 7 feet high, 3 feet wide and 2 inches thick? Express your answer as a decimal to the nearest tenth.