Respuesta :
Simply add in the known information. To find the cost of 1700 key chains, substitute it for p in the equation, like this: C=205.00+0.70(1700) and solve.
C = 205 + 0.70p......when p = 1700
C = 205 + 0.70(1700)
C = 205 + 1190
C = 1395 <==
C = 205 + 0.70(1700)
C = 205 + 1190
C = 1395 <==