21=b/5 what is the variable b

Alan and betty collected cans for recycling. Alan collected 154 cans. Betty collected 215 cans. How many cans did they collect?

If Cindy works 18 hours a week at 5.15 an hour how much did she make for the whole year?

Use the cubic model y=x3+x2+x to estimate the value of y when x = 10.

How do i solve this quadratic equation: -5x^2x+9=0 when it asked me to find the root

Suppose the volume of milk in a glass is 230 cubic cm. If 1 gallon of milk equals 3.79 liters, how many glasses of milk are in 1 gallon

Verona is solving the equation - 3 + 4x = 9. In order to isolate the variable term using the subtraction property of equality, which number should she subtract from both sides of the equation? - 4 - 3 3 4

What is the index of the following Radical Square root of Q

A display of pens has 8 hooks. Each hook can hold 3 packages of pens and there are 3 pens in each package. If the display is completely full how many pens does it hold

Consider the experiment: flip a coin, then roll a number cube

When 24 is divided by the positive integer n, the remainder is 4?