For brainiest:):):):):):):):):)

1. $21

2. $56

Step-by-step explanation:

1.

100% - 30% = 70%

70% * $30 = 0.7 * $30 = $21

2.

100% - 20% = 80%

80% * $70 = 0.8 * $70 = $56

Step-by-step explanation:

The equation for percentages is (percent over 100) times (x over total)  

So for the table the equation is 30/100 * x/30

You cross multiply your total x percent and divide by 100.

So 30 * 30 = 900

900 / 100 = 9

30% of 30 is 9.

Now subtract your answer from the original total (30 - 9 = 21)

So the sale price of the tennis table is $21.

Now repeat for your other equation

Your equation is 20/100 * x/70

So 20 * 70 = 1400

1400 / 100 = 14

20% of 70 is 14.

Now subtract your answer from the original total (70 - 14 = 56)

So the sale price of the easel is $56.

Please give me brainiest!

a) t'(-3, 6) and v'(0, 3)  

step-by-step explanation:

- "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."