Answer:
Step-by-step explanation:
9+7+2=18
But since there are only 12 people in the class, its overlapping. So 18-2(the people that have nether), is 16.
So 16-12 is 4. Therefore 4 people have both a brother and a sister.
Answer:
Step-by-step explanation:
Multiply?
Since all the merchandise is 1/4 off, all we need to do to figure out the original price is to multiply $25 by 4.
24×4=100
The original price of her merchandise would be $100.
F(10) = (10)^2 + 1
= 100 + 1
= 101
