How do I do this question f (x) = -x^2+5

The table represents a function. what is f (-2)

Two numbers have a difference of 8 what is the minimum product of these numbers

The sum of two numbers is 50 the first number is 43 less than twice the second number write and solve a system of equations to find the two numbers

Fill in the table and then round to the given place. label the number lines to show your work

Lewis paid $13.55 for a beach chair and $5.75 for a book. How much did Lewis spend? $7.80 $18.20 $19.20 $19.30

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.