Amy is buying fruit for a party she is having. she buys the fruit over a three day period. the first day she buys a apples and n nectarines. the second day she buys twice as many apples that she bought on the first day. on the third day she bought 10 bananas. a. write an expression for the total number of pieces of fruit amy buys. do not simplify b. explain how to use the order of operations to simplify the expression. show your work plz this is for