Is 32.1 times 10^5 a scientic notation

Kelly is 15 years older than frank. In 2 years time, she will be 4 times as old as him. Find their present ages

Evaluate the function h (x) = 2x-1 find h (4)

Use the rules of exponents to evaluate and simplify the following expression. Type all without negative exponents. (ab) - 2 =

The sum of 4 times a number and 2 equals 8

What term describes how two sides of a figure are related

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.