Pi = 3.14
3.14 * 3.14 = 9.86
Answer: 1/3 (x + 6)
Explanation: given f(x) = 3x - 6.
Let y = f(x) and so y = 3x - 6.
Trade places between x and y.
x = 3y - 6
Solve for y
x + 6 = 3y
y = x + 6/3
Now the new y is the inverse and so y = f-1(x)
f-1(x) = 1/3(x + 6)
18 - 4.25 = 13.75.
13.75 - 9.75 = what is left to spend, $4.00
This means she can buy no more than 8 cracker packs.
