When f (x) = - 3, what is x

The length of a rectangle is 5 cm more than its breadth. If the perimeter of the rectangle is 38cm, then find the length and breadth.

3]what is 8.49*10-7 in decimal form

Simplify the expression (1/2y^5) ^3 (2y^2) ^4

3*5 (64-65) = just want to test if it works

Tara buys two items that cost d dollars each. She gives the cashier $20. Which expression represents the change she should receive? 20 - 2d .20 - d 20 + 2d 2d - 20

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.