Write an equation and proportion for

39 is what percent of 80

then use that equation / proportion to solve

1/7-3 (3/7n-2/7) expand the expression and combine like terms

Write a real world situation that could be represented by the system of equations shown below

2y + 4x = 8; x = - 2,1,3

The function f (x) = 12x is used to model the cost, in dollars, of x pounds of coffee. The mathematical domain for the function is the set of real numbers.

Aileen intends to give 14 roses and 42 lilies to x number of her friends. each of her friends must receive the same number of flowers of both types. Find the possible values of x.

What is a sixth grade word problem that has 9.5 * (8+12.5)

Sierra purchased a cell phone for $414.95. If the sales tax rate is 7 1/2%, what was the price of the cell phone before tax?

Solve: |2x-1|<11 express the solution in interval notation

How do I find the ration of the first number to the second and simplify? 0.4 to 1.2

Which expression is equivalent to 8 - 3