Ariel has 19 more cds than her sister. Victor has 3 times as many cds as Ariel has. Which expression can be used to show how many cds the three have in total?
a)19+3x b)51+3x c)76+3x d) 76+5x
sister has x
Ariel has x+19
Victor has 3(x+19)
x + x+19 + 3(x+19) = 5x + 76