3. Simplify each expression. Show as much work as possible for each question for full credit. Write each answer in standard form.

a) (-5 +x)(x+4) (Show your work) (5 points)
b) Is the product of -5 +x and x+4 equal to the product of 5+x and x-4? Explain your answer. (Show your work to prove your answer) (2 points)
c) (2+5)(3²+4−3) (Show your work) (5 points)

Liesl grew 7/12 of a foot in one year. her little sister grew 1/3 of a foot during that same year. how much more did liesl grow than her little sister did

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?