Para organizar os primeiros jogos olímpicos da América do Sul, foram necessárias Quantas bolas de tênis? A) 17780
B) 17770
C) 17760

B or A and yeah                                      

the answer is 11.2 (i know i’m late)

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.