Can someone please answer

It is B

Step-by-step explanation:

If you find the perimeters of each of the rectangles, you get 11x2, 15x2, and then 19x2

How did I get the x2?

All you have to do is add the length and width together, but it only gives half of the perimeter as there is another half at the other corner of the rectangle. The 11, 15, and 19 was from adding the 4s with the 7s. In the first rectangle, you do 7+4 equals 11, but you have to multiply it by 2, hence the first sentence at the beginning. Then you can find the slope, or the rate of change, as it increases by intervals of 8. The four that is added to every extra rectangle added to it is multiplied by 2, because there is another four at the other side of the rectangle. Then you can find the answer using process of elimination because B, is the only answer that the y-values increase by 8, while the x-values increase by 1, as the x values are counting how many rectangles are in each rectangle.

Hope this helps!

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

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