80% of what number is 20

Write an equivalent expression to x - 5y + 7

What expression is equivalent to 2^-3/2^-5?

Esteban counted number of steps it took him to walk to school. He counted 1,138 steps. How many steps dose he take walking to and from school each day

If a sale person makes 6% commission, how much would they make from a 1,800 sale

Sort the likelihoods from least to greatest: 60%, 8 out of 10, 0.37, 20%, 5/6

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.