The brain has 100 billion brain cells. If you counted each cell at 1 per second, how long would it take you to count all 100 billion cells?

Eight less than seven times a number x

A park is in the shape of a rectangle. The park is 5/8 mile long and 2/3 mile wide. What is the area of the park?

Suppose a house costs $270,000 appreciates by 5% each year. In about how many years will the house be worth $350000?

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. A rocket is launched from atop a 101-foot cliff with an initial velocity of 116 ft/s. a.

What is 639/7 as a mixed fraction

Jacqueline wants to travel to Oregon. She rents a car for $50, plus $0.10 per miles. Jacqueline paid a total of $195. How many miles did she drive?

25 1/2 divided by 6 In this math equation I don't know how to do it

What is three and one-eights minus one and seven-eights?

Solve 5x-4=5 (x-3) + 11

The perimeter of a pool table is 30 feet. The table is twice as long as it is wide. What is the length of the pool table?