Which expression is equal to x−4x−7+x2−2x+3x−7 ?

Which one is true about the hexagons ?

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

Which strategy is used by public health to reduce the incidence of food poisoning?