Alice leaves her house, driving east at 45 miles per hour (mph). Thirty minutes later, her
husband Dave notices she forgot her cellphone
and sets off after her. How fast must Dave travel in order to catch up with Alice 3 hours
after he leaves?

i believe the answer is the polygon, heptagon.

faster, im not sure why but i know it is faster

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)