Answer:
C. 20
Step-by-step explanation:
Given
30 towels= 90$
450$-90$=360$
360$\18$=20 basketballs
B
Becuase I'm smart
21 + 3a
3 (7+a)
distribute 3 into parentheses:
Answer: 10 cups of sugar
Cups of sugar : Cups of flour
2 : 3
? : 15
Cross multiply
3? = 15 × 2
3? = 30
Divide both sides by 3
? = 10
He needs 10 cups of sugar.
5x+9=x-23
5x-x=-23-9
4x= -32
4x/4=-32/4
x=-8