Factor the following expression:

x2-4x-21

Solve the equation |x|=-2

6=4a-4-6 what is the answer

Carl has three lengths of cable, 5/6 yard long, 1/4 yard long and 2/3 yard long. he needs at least one yard of cable. Which two pieces together Make a k Length at least 1 yard and closest to one yard

On Monday, the pollen count was 320 grains per cubic meter. On Tuesday, the pollen count was 15% less. What was the pollen count on Tuesday

If ef = 19 and fg = 12 then ef = ?

Dish detergent is sold in three different sizes. To save money you want to buy the size that gives you the best deal. Determine which of the sizes has the best unit cost.

Which fraction is greatest 5/6 7/9 2/3 or 9/12

The length of a rectangle is 4 times the width. The perimeter is 90 cm. Find the width and length.

Suppose that today (year 0) your car is worth $17,000. Each year your car loses 10% of its value, but at the end of each year you add customizations to your car which increase its value by $20. Write a recurrence relation to model this situation.

Jenny saved 1/6 of her paycheck and saves 2/5 of the remaining amount. What fraction of her total paycheck is saved?