Answer:
f^-1(x)=³√[(x+7)÷4]
Step-by-step explanation:
f(x)=4x^3-7
y=4x^3-7
interchange 'y' with 'x'
x=4y^3-7
make y the subject
4y^3=x+7
divide by 4 both sides
y^3=(x+7)÷4
multiply by the cube root both sides
³√(y^3)=³√[(x+7)÷4]
y=³√[(x+7)÷4]
f^-1(x)=³√[(x+7)÷4]
11. 1 3/8+(-7/8)=
11/8+(-7/8)=4/8 or 1/2
Answer:
she now has $21 in her pocket
Step-by-step explanation:
Answer:
x ≤ 1
Step-by-step explanation:
5(x+3) - 7≤13
5x+3 - 7≤ 13
5x+15-7 ≤ 13
5x+15 ≤ 13+7
5x+15 ≤ 20
5x ≤ 20-15
5x ≤ 5
x ≤ 1
