91,007,500 in scientific notation with positive powers of 10

Solve 8x - (2x+3) = 4x+1

Carpet Masters charges $9.50 per square yard to clean a carpet. If you have two rooms with an area of six square yards each, how much will it cost to have the carpets cleaned?

Simplify the following. 81^3/4

Sentence using the word compound

In a certain box there are 7 blue marbles and 9 red marbles. drawing two marbles without replacement, what is the probability that

How do I change this to a fraction - 6.3

If a^2 + b^2=c^2 then the triangle is a right triangle. A triangle with side lengths of 12 in, 24 in and 16 inches is a right triangle. True or False

You buy a package of cheese for $2.50, a loaf of bread for $2.15, a cucumber for $.65, and some tomatoes for $3.50. Find the total cost of the groceries.

62,400 is what percentage of 156,000

George wants to buy a $200 bike by the end of the summer. He decides to do odd jobs to earn the money for the bike. He miss lawns, washes cars, and waxes cars. His rates are $10 for a mowed lawn, $8 for a washed car, and $4 for a waxed car.