Solving equations with variables on both sides of the equal sign

2a-8a=12-8a

For what values of x does the binomial 2x-1 take on a positive value? For what values of y does the binomial 21-3y take on a negative value? For what values of c does the binomial 5-3c take on a value which is greater than 80?

What number is 25 percent of 84?

A ball is thrown from a height of 67 meters with an initial downward velocity of 5/ms. The ball's height h (in meters) after t seconds is given by the following h=67-5t-5t^2. How long after the ball is thrown does it hit the ground?

In a scale drawing of an apartment 1 centimeter represents 2 3/4 feet. if the length of the kitchens is 4 1/2 cm on the scale drawing what is the actual length in feet of the kitchen?

Isabelle invested $25,000 into an account that earns 3% annual interest compounded quarterly. If she makes no other deposits into the account, what will be the balance of her account in 20 years? Round to the nearest whole dollar.

What is the factored form of the polynomial 25ab^2+5ab

What's 0.45 as a fraction in simplest form

Chico walks 3/5 mile to the library Nikki walks 1/4 the distance that Chico walks the library how far is Nikki walk?

Suppose there are 25 students in your class. If the teacher draws 2 names at random, what is the probability that you and your best friend will be chosen? A. 2/25 B. 1/49 C. 1/50 D. 1/300

Beth runs a catering business and needs 64 pints of water every day. She gets water in 2-gallon jugs. So, she gets jugs of water every day. (Hint: 1 gallon = 8 pints.)