What is the 33rd term of this arithmetic sequence? 12, 7, 2, -3, -8, …

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

The answer is 7.2 how would you put this as money

Adoughnut shop charges $0.50 for each doughnut and $1 for a carryout box. shirley has $10 to spend. which inequality can be used to find d, the number of doughnuts she could have bought if she also wants them in one carryout box?