What is the answer to x in x - (-4) = 15

The perimeter of a rectangle is twice the sum of its length and width the peremeter is 28 meters

X - Y = 11 2x + Y = 19 where do the lines cross

Subtract 16 1/8 from 7/8

A store sells 3 ears of corn for $1. They round prices to the nearest cent as shown in the table. Tell whether you would describe the relationship between cost and number of ears of corn as a proportional relationship. Justify your answer.

Triangle HJK is transformed to similar triangle H'J'K': A coordinate plane is shown. Triangle HJK has vertices H at 8 comma 8, J at 8 comma 4, and K at 4 comma 4.

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.