Three families each buy the same number of $10 tickets per person to the zoo. Each family also pays $2 for parking. The total cost is $126.
Write an equation that can be used to find n, the number of people in a
family
)=
n+

i would say c is the best answer, hope it's right!

good luck! =)

cutie~

a is the right answer

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

step-by-step explanation: