HEL I HATE MATH AND I DONT GET THIS QUESTION. WILL MAKE a biologist measures and records the hight of the plant each day. after several days, the biologist determines that's each plants daily hight can be represented by these equations.
plant #1 : h=2.5d+10.0
plant #2 : h=2.5d+7.5

in both equations, d represents the day and h the height of the plant in millimeters. the scientist wants to know when the plants will be the same height. by looking at the two equations and without graphing or solving algebraically, when will the plants be the same height? explain your answer .