X+3 = 7.5
x =7.5-3
x= 4.5
x^2 +3x-7
= (4.5)^2 +3(4.5) -7
= 20.25 +13.5 -7
=26.75
Answer:
a= 68% times 250, there are 170 students not in Advanced
Step-by-step explanation:
If 32% are in Adv math, 68% aren't, to solve a percentage, I did
.68 times 250