Simplify the following expression

x^9*x^-4=x^n

Which number should each side of the equation 4/5x=8 be multiplied by to produce the equivalent equation of x = 10? A - 45 B 15 C 54 D 5

Debra bought 4 CDs that were each the same price. Including sales tax, she paid a total of $ 61.60. Each CD had a tax of $ 0.90. What was the price of each CD before tax?

You deposit $1200 in an account that earns 7.2% annual interest. Find the balance after 8 years when the interest is compounded quarterly.

What is the recursive rule for an=4n-1? a1=-1; an=an-1+4 a1=3; an=an-1-1 a1=3; an=an-1+4 a1=4; an=an-1-1

A cylinder has a volume of 198 cm3, and its base has an area of 22 cm2. What is the height of the cylinder?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.