Ob is saving to buy a new MP3 player. For every $15 he earns babysitting, he saves $5. On Saturday, Rob earned $75 babysitting. How much money did he save?

A company is selling two different size medicine balls to a local colleges athletic department. The ratio of the ball diameters is 15:11. If the diameter of the small ball is 55 cm, what is the volume of the larger ball.

A man has two more nickels than dimes. He has $1.15 in all. How many coins of each kind does he have? Which equation can be used to solve the problem? 1. 5x + 10 (x + 2) = 115 2. 5 (x + 2) + 10x = 115 3. x + x + 2 = 115

A number decreased by 7 is 14 find the number

Does the relationship between x and y represent direct or inverse variation? What is the constant of variation? direct variation; k = - 2 direct variation; k = inverse variation; k = - 2 inverse variation; k =

Find inverse of f (x) = (x-3)

A mixture of 12 ounces of vinegar and oil is 40%n vinegar by weight. How many ounces of oil must be added to the mixtue to produce a new mixture that is only 25% vinegar?

An airplane ticket has an area of 80 square centimeters. Its perimeter is 36 centimeters. What are the dimensions of the ticket?

Determine the value of x in the system of equations. 3x + 2y = 25 6x - y = 40 Select one: A. 7 B. 8 C. 9 D. 10

The deer population in a local neighborhood is rising at a rate of 3.5% each year the Parks and Recreation Department estimated the current deer population to be approximately 850 deer

How do use u substitution?