How can I find out if 80 is 25% of a number

What is the answer to this problem - 3 (10z+15)

Solve for y. y 1.05 = 7.26

The number of words Maria typed directly varied with with the amount of time she spent typing. If she typed 275 words in 5 minutes how long would it take her to type 1,100 words?

Which values of x satisfy the inequality 0.5 x minus 0.75 greater-than-or-equal-to 3.25?

A legal firm offers some services"pro bono" which means that they work for clients free of charge. the legal firm accepted 2% of its cases pro bono last year. what is the total number of cases they completed if they accepted 252 pro bono cases?

What is the product of - 5x^3 + 2x - 4 and 2x^3 - 4x^2 + 6? Show your work and explain your answer. If you do not explain the steps of your work, you will not receive credit. Leave your answer in standard form.

Whats the output of x + 6 of 0

The submarine is at 1,145.2 feet below sea level. Between which 2 integers is this elevation?

What are two values for x?|x|=5

What is the value of x in the equation 1/2x-3/4=3/8-5/8x?