What is the value of the expressions
1. 7 (3+5) = +
2. 15 - 10 = (3-2)

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

Can any one me with the answers to these questions asap?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers