C (n) = 500 + 4n ,
C is cost in dollars. of renting hall 4 prom given my equation:
C (n) = 500 + 4 n
n = # of students going to prom.
Calculate cost of renting hall
if 70 students go.
A. $108
B. $500
C. $780
D. $970
500 + 4(70)
500 + 280 = ?
So it would be $780. Thanks helper =)
correct, you're welcome
c=500+ 40n
To calculate the cost of renting the hall if 70 students go to the prom, we can plug in the value of n = 70 into the equation C(n) = 500 + 4n.
C(70) = 500 + 4*70
= 500 + 280
= 780
Therefore, the cost of renting the hall when 70 students go will be $780.
So, the correct answer is C. $780.