Which expression can you simplify by combining like terms? 6d2+5cd−3dc+8 12c2−8d2c+3dc+4 7d2−3c2+6d−c 16c2+8cd+7c−8d

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earn $75 in interest.how much interest will she earn during the following year?