Marci went to the state fair with her friends. the total cost of tickets for rides is given by the equation c=2.75t where c is the total cost of the tickets and t is the number of tickets. if marci bought 20 tickets, how much would she spend? be sure to include the unit in your answer. *

  c = 55 . . . . (no units for cost are given in your problem statement)

Step-by-step explanation:

"t is the number of tickets" and "Marci bought 20 tickets", so we conclude t=20. Putting that value into the equation and doing the arithmetic, we find ...

  c = 2.75·20 = 55

We don't know if this is pennies or pounds, dollars or rupees or pesos or euros. No monetary units are mentioned in the problem statement given here.

c > -10.55

step-by-step explanation:

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