Lin's job pays $8.25 an hour plus $10 of transportation allowance each week. She can earn up to $175 per week (including the allowance).
- How many hours per week can Lin work? Explain or show your reasoning,

Step-by-step explanation:

y=8.25x+10

20 hours

8.25*20 is 165

165+10 is 175

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.