The equation a = 640s gives the relationship between s square miles and a acres. Pam owns 7.5 square miles of farmland. How many acres does she own? A. 480 acres B. 11.72 acres C. 4,800 acres D. 1.17 acres

Two angles are complementary if the sum of their measures is 90 degrees. If the measure of an angle is 7 x degrees, represent the measure of its complement as an algebraic expression in x.

Write a number in which the digit 2 is one tenth the value of the the digit 2 in 8.524

A cell phone company chargers $60.00 a month for up to 1 gigabyte of data. The cost of additional data is $0.05 per megabyte.

The largest possible circle is cut out of a square whose side length is 8 feet. What will be the approximate area, in square feet, of the remaining board?

Factor 200t + 8t 3 - 80t 2. 8t (t - 5) (t + 5) 8t (t - 5) 2 - 8t (t - 5) (t + 5)

I thought of a number, divided it by 1 1/2, then added 2 1/2 to the result, then multiplied the sum by 1 2/3. then i subtracted 1 2/3 and got the result 2 5/6. what was my number?

Find the lowest common denominator of and

Last week Bill made a purchase of $56.78 before tax. This week, the same items on sale would have cost him $41.90 before tax. If the tax is 4%, how much could Bill have saved by buying the items on sale (including tax) ?

A student is attempting to simplify the express below. Sample mathematical work is shows. which statement best applies to the sample mathematical work?

Which system of equations has infinitely many solutions?