Question

a car increases, then decreases, its speed. which table could represent the speed of the car?

time (min)	5	6	7	8	9
speed (mph)	45	43	41	42	43
time (min)	5	6	7	8	9
speed (mph)	45	47	49	48	47
time (min)	5	6	7	8	9
speed (mph)	45	45	45	43	41
time (min)	5	6	7	8	9
speed (mph)	45	43	41	41	41

Explanation:

Step1: Analyze the first table

Speed decreases continuously from 45 mph to 41 mph then slightly increases. But the overall trend is mostly decreasing.

Step2: Analyze the second table

Speed increases from 45 mph to 49 mph at 7 minutes and then decreases to 47 mph. This shows an increase - then - decrease pattern as required.

Step3: Analyze the third table

Speed remains constant at 45 mph until 8 minutes and then decreases. There is no initial increase.

Step4: Analyze the fourth table

Speed only decreases from 45 mph to 41 mph and stays at 41 mph. There is no increase.

Answer:

The second table (Time: 5, 6, 7, 8, 9; Speed: 45, 47, 49, 48, 47) could represent the speed of the car.