Roberto purchased airline tickets for his family the tickets cost $1,250 the airline also charged a luggage fee bringing the total cost to $1,400 what is the percent increase in the cost due to the luggage fee

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.

i think it would be c

mark brainliest if im right

step-by-step explanation:

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