Use addition to solve the linear system of equations. include all of your work in your final answer. these are the equations and not answers x - y = 4 x + 2y = 4

Will give brainliest series to sigma notation write the following series in sigma notation. 6+10+14+18+22+26+30 example image shown below.

Use set builder notation to represent the following set: { -3, -2, -1, 0}

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