An online store is having a sale on digital cameras. The table shows the regular price and the sale price for the cameras. the table:
regular price sale price discount
A $97.99 $83.30 *blank*
B $102.50 $82.00 *blank*
C $75.99 $65.35 *blank*
D $150.50 $135.45 *blank*

question A: write a rule that can be used to find the percent of decrease for any of the cameras.
question B: complete the table for the discount.
question C: which model has the greatest percent discount?