You and a group of friends go to a mexican restaurant. your group buys 14 small plates and 8 large plates for $87.40. large plates cost $1.30 more than small plates. what is the cost of the large plates? of the small plates?

solve using the elimination method, and the substitution method.

00

step-by-step explanation:

b.my answer is b.

brainliest

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