Twenty cars go past your house during a 5-minute period. at that rate, how many cars will go past your house during a 15-minute period?

60

Step-by-step explanation:

because there is (3) 5's in 15, and there are 20 cars going in 5 min. So that means every 5 min you are adding 20 cars, so by the time you get to 15 that will have got to 60.   (20=5min) + (20=5min) + (20=5min) = 60 cars in 15 min

s

step-by-step explanation:

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: