The total cost to go horseback riding is x dollars per hour plus a $2 fee for renting a helmet. Which expressions represent the cost, in dollars, for people to go horseback riding for 4 hours each? Select all that apply. A.4(3x+2)
B.3(4x+2)
C. 6x+3++6x+5
D.4(3x)+4(2)
E.12x+8
F.3x(4)+2

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.