What is 20% written as a decimal

A firecracker shoots up from a hill 140 feet high with an initial speed of 100 feet per second. Using the formula H (t) = - 16t2 + vt + s, approximately how long will it take the firecracker to hit the ground?

You earned $98.30. You would like to buy some new T-shirts. Estimate the number of T-shirts you can buy if each one costs $12.30. 10 T-shirts 8 T-shirts 7 T-shirts 9 T-shirts

The scale on a map is 1/3 inch = 60 miles. The distance between two cities on the map is: 6 2/3. What is the actual distance between the two cities?

One cell phone company offers a plan that costs $29.99 and includes unlimited night and weekend minutes. Another company offers a plan that costs $19.99 and charges $0.35 per minute during nights and weekends.

Solve the equation 8-6m=4m + 48

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.