An art teacher needs to buy 20 shirts for a class project. She can buy the shirts at a local store or online.
This graph shows the costs, in dollars, for different
numbers of shirts at a local store.
T
Costs of Shirts
at a Local Store
Total Cost ($)
60
55
50
45
40
35
30
25
20
15
.
10
5
10 12

answer: 2 and 1

step-by-step explanation: got this question

can you make your screen more see able?

then i might be able to .

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0