Tennis balls cost 7$ for a can of 3. Steve gives the cashier $40 to buy balls and receives $12 in change. How many tennis balls did Steve buy?

200 at 6% how much will Rachel have in her account in 10years

Solve 2cos2x + cosx - 1 = 0 for x over the interval [0, 2pi).

Mrs burnham is maligno modeling clay for her Class she Needs 2/3 cup of warm éster for each batch. Mrs burnham has a 1 cup measure that has no other markings.

Here are the equations of four lines. Two of the lines are parallel. Which lines? Line 1 2y = 8x + 6 Line 2 x + y = 6 Line 3 4x - y = 5 Line 4 4x + 2y = 1

elijah eats at his favorite restaurant 4 times a week. He buys a sandwich for $8 and a drink for $2. Write an equation that can be used to find T, the total amount of money he spends at the restaurant each wee

Over the past ten years, the town's population doubled in size. the population is currently 12,000. what was the population ten years ago?

What is the answer to 1/2 (x + 4) =

how to solve this equation y=-2+6 and 3y-x+3=0

Anna has 7 baskets and flowers she has 5 fewer baskets than flowers how many flowers does Anna have

The angle at which the light ray hits the water is equal to the angle at which light ray is reflected from the water?