the perimeter of a rectangle is found by finding the sum of all the sides. write an algebraic expression to represent the perimeter of a rectangle with length x meters and width 4 meters shorter.

Which expression best represents the opposite of the opposite of 8 1/4? A. - (+8 1/4) B. - (-8 1/4) C. + (-8 1/4) D. + (+8 1/4)

Is having a multiplication sign outside the parentheses the same as not?

Which of the following probabilities is the greatest for a standard normal distribution?

What is 2 1/5 times 7/8 when estimating?

Your friends are eating at the same restaurant, and their bill adds up to $45. They leave a $9 tip for their server. What percentage of the bill was the server's tip? Explain your reasoning

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.