How do I subtract 6.45 from 81.3

Which of the following is a solution of x2+6x=-18

Solve this equation g-8=25

Dennis has a 12-foot board. He cuts it down into pieces that are each 2 feet long.

The selling price of a certain collector's item was $10 in 2000 and $15 in 2001. If the selling price of the item follows a geometric sequence, what would the price of the item be in 2002?

Every social security number consists of nine digits, 0 through 9. if repetition of digits is permitted, how many possible social security numbers are there?

Jerry drew an obtuse angle. Which could be the measure of his angle?

A library charges a late return fee of 3.50 plus $0.15 per day that a book is returned late write a equation to find the total late fee f for any numbers of days late d

What is the product of 45.67 x 32.58?

If you apply the changes below to the linear parent function f (x) = x what is the equation of the new function vertically compress by 1/4 over the y-axis

A science class measured the mass of a balloon to be 4 grams. After the balloon was inflated the mass was 8 grams. What was the mass of the air inside the inflated balloon?