Decide whether the number is a solution of the equation

Is 5 a solution of 4f=25-f

What is the height of each pyramid? Square pyramid: volume 1024 cm cubed; base edge 16 cm

Which equation can be used to find y, the year in which both bodies of water have the same amount of mercury? The levels of mercury in two different bodies of water are rising. In one body of water the initial measure of mercury is 0.

Name an excluded value

Two cards are drawn from a deck without replacement. What is the probability that both cards are red?

If 1000 is the perimeter and 150 is the length what is the width

B2 = 5, h=3 and a=12, b1=?

Margo purchases bulk teas from the warehouse and marks up those prices by 20% for a retail sale. When teas go unsold for more than two months, margo marks down the retail price by 20%.

7. A Honda Accord depreciates at 15% per year. Six year ago it was purchased for $21,000. What is it worth now?

A country is considering two income tax rates. Geoffrey is comparing what his tax bill would be under each plan. Under plan A, he pays 5% on the first $10,000. The next $85,000 is taxed at a rate of 10%.

Sandy and Suzanne are planting flower pots around the school building. Sandy has planted 33 pots and is planting at the rate of 10 pots per hour. Suzanne has planted 25 pots and is planting at the rate of 14 pots per hour.