Two computer repair companies charge differing rates for their services • We Fix It Computer Repair charges based on the equation C - 90 +
30h, where is the total cost for working h hours.
John's Computer Repair charges are shown in the table below.
John's Computer Repair
Hours
Total Cost
1
$55
2
$100
3
$145
4
$190
А
Which company has a higher hourly rate, and by how much?
We Fix It Computer Repair by $80
We Fix It Computer Repair by $15
C. John's Computer Repair by $80
D. John's Computer Repair by $15
B.

1. when "a" is a root of a polynomial, (x -a) is a factor of it. for the three roots given, the factors of the desired polynomial are (x +2)(x -1/2)(x -3).

in order to make the leading coefficient be negative, we need to multiply this product by a negative number. any negative number will do, but we choose a small (magnitude) value that will eliminate the fraction: -2.

then

f(x) = -2(x +2)(x -1/2)(x -3) = -(x +2)(2x -1)(x -3)

= -(2x² +3x -2)(x -3)

= -(2x³ -3x² -11x +6)

f(x) = -2x³ +3x² +11x -6

2. a graph created by the desmos on-line graphing calculator is shown, and the zeros are highlighted.

3. as indicated in part 1, the multiplier of this equation can be anything and the zeros will remain the same. you want a negative leading coefficient, so the "anything" is restricted to any of the infinite number of numbers that will make that be the case.

answer: not good

step-by-step explanation: