Which equation represents a linear function? (5 points) equation 1: y = 2x + 1 equation 2: y2 = 3x + 1 equation 3: y = 5x5 − 1 equation 4: y = 4x4 − 1 select one: a. equation 1 b. equation 2 c. equation 3 d. equation 4

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