The use of a neighborhood car wash costs n dollars for a membership and p cents for each wash. If a membership includes a bonus 4 free washes, which of the following reflects the cost in dollars of getting a membership at the car wash and washing a car q times, if q is greater than 4?
A$100\mathrm{n} + \mathrm{pq} - 4\mathrm{p}$
B$n + 100 \text{pq} - 25\text{p}$
C$n + pq - \frac{p}{25}$
D$n + \frac{pq}{100} -\frac{p}{25}$正確答案
答案與詳解
