Lauren is replacing a door that measures 80 inches by 39. What is the distance between opposite corner of the door

Charles is on a 8 1/2 mile bike ride. he stops for a rest after he’s gone 5 2/5 miles. how much farther does he still have to go?

The perimiter of a rectangle is 70 inches the legneth of the rectangle is 5 less than 3 times the width of the rectangle what is the width of the rectangle

Which expression is equivalent to 2x^2+7x+4?