Answer:
x=60°
Step-by-step explanation:
180 - 90 = 90
90 - 30 = 60
x=60
The answer is option A.
Hope this helps you
18
f(3)=21
f(1)=3
f(n)=2f(n-1)+3
n=2
f(2)=2f(2-1)+3
f(2)=2f(1)+3
f(2)=2*3+3
f(2)=6+3
f(2)=9
n=3
f(3)=2f(3-1)+3
f(3)=2f(2)+3
f(3)=2*9+3
f(3)=18+3
Answer: 7.5 cups
