Distribute 6 (x-3)

Distribute -7 (x+2)

Distribute x (- 6.8)

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?