Respuesta :

BrainGirl12
You need to use multiplication.

3 x 9 = 27

2 x 12 = 24

Now add 24 and 27 wich make 51.
apologiabiology
total cost=shirtcost+shortscost

shirtcost=number of shirts time cost per shirt
shirtcost=3 times 9=$27

shortscost=number of shirts times cost per short
shortcost=2 times 12=$24

total cost=27+24=51

total is $51