The cost of renting tuxes for the Choral Society's formal is $20 down, plus $80 per tux. Express the cost C as a function of x, the number of tuxedos rented.
C = 80 x + 20
To express the cost, C, as a function of the number of tuxedos rented, x, we need to consider both the down payment and the cost per tuxedo.
The down payment for renting tuxedos is $20, which is a fixed cost that does not depend on the number of tuxedos rented. So, the down payment, D, is equal to $20.
The cost per tuxedo rented is $80. This cost is multiplied by the number of tuxedos rented, x, because the total cost will depend on how many tuxedos are rented. So, we multiply $80 by x.
Therefore, the cost, C, can be expressed as the sum of the down payment, D, and the cost per tuxedo rented, which is $80 multiplied by x:
C(x) = D + ($80 * x)
Substituting the values:
C(x) = $20 + ($80 * x)
So, the cost of renting tuxedos, C, is a function of x, the number of tuxedos rented, and can be expressed as C(x) = $20 + ($80 * x).