6. You made a purchase at a local hardware store, but what you've bought is too big to take home by yourself. For a small fee, you arrange to have the hardware store deliver your purchase for you. You pay for your purchase, plus the sales taxes, plus the fee. The taxes are 7.5% and the fee is P50.
a. Write a function t(x) for the total,after taxes ,on the purchase amount x.
​