X=-3. The question is wanting to know that if y=3, what does x equal? Well the only y-value that has y=3 on this line is x=-3
7 hours X 60 minutes = 420 minutes
420 minutes + 20 minutes = 440 minutes
None, because you need to make over 15,000 a year to be taxed. And with all that money for one year would not be taxed.
The correct quadratic equation;
x2+7x-2=0
Working
Assuming the frame has a uniform thickness;
Then length of mirror and frame is 3+x and width 2+x
The area of mirror and frame area;
A=L*W
8=(3+x)(2+x)
8=(6+5x+x2)
Taking 8 to the Right hand side, we have:
x2+5x-2 =0
1/2 x 5/8 = 5/16 in simplest form
