You want to earn $50 to buy a new baseball bat. You earn $8 per week as your allowance and $10 every time you clean your room.

A) Write an equation that represents your weekly income y(in dollars) for x rooms cleaned

B) how many times do you need to clean your room to earn enough money in one week to buy a new baseball bat?

it’s supposed to be -4+45=41

step-by-step explanation:

1

x = 1

step-by-step explanation:

0 ÷ x = 0

0 ÷ 1 = 0

x^2 + 81

we can factor this using difference of square binomials.

rewrite the equation:

x^2 - (-81)

factor:

(a^2 - b^2) = (√a^2 + √b^2)(√a^2 - √b^2)

(x^2 - (-81) = (x + √-81)(x - √-81)

we can remove the - from under the radical by multiplying it by i.

(x^2 - (-81) = (x + i√81)(x - i√81)

(x^2 - (-81) = (x + 9i)(x - 9i)

we can check our answer by using foil:

x^2 - 9ix + 9ix - 81i^2

x^2 - 81^2

i^2 = -1

x^2 + 81