What is h−(−2.22)=−7.851 someone please help me

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

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

Here is another math questions. i will keep asking different questions. 4^2x=6