Answer:
30%
Step-by-step explanation:
To know the percentage you times the fraction with 100
So

Since you have 69 milkshakes with whipped cream out of the 230 milkshakes. And you times it with 100
Answer:
y=1/4x+3
Step-by-step explanation:
To find the inverse, switch x and y or f(x)
f(x)=4x-12
y=4x-12
x=4y-12
Add 12 to both sides
x+12=4y-12+12
x+12=4y
Divide both sides by 4
x+12/4=y
1/4x+12/4=y
1/4x+3=y
y=1/4x+3
B=29.4 !!!!!!!! this how i do it