Each of the following describes a variable expression. The area of a rectangle that is (x + 2) units long and 4 units wide.
1.
4(x + 2)
The perimeter of a rectangle that is (x + 3) units long and (x + 1) units
2. wide.
2(x + 3) + 2(x + 1)
The volume of a rectangular prism that is 2 units long, 1 unit wide,
3. and (2x + 4) units high.
2(1)(2x + 4)
Which variable expressions are equivalent?
O A 1 and 2
OB. 1, 2, and 3
OC. 2 and 3
O D. 1 and 3

- "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."

the diver is 33 feet below the surface.

step-by-step explanation:

hope this

1

x = 1

step-by-step explanation:

0 ÷ x = 0

0 ÷ 1 = 0