1. Which of following situations does not represent a proportional relationship?

a. Emilia earns $8.75 an hour and 10% commission on any new memberships she
sells.
b. Tatum is flying a remote-controlled airplane at a speed of 18 miles per hour.
c. Phoebe is at a baseball game where they sell all drinks for $1.75 each.
d. All of the above are proportional.

21.4 i did it already for s1

step-by-step explanation:

whats the

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6