15 feet rope sells for 20.25. How much would 21 feet rope cost?

$28.35

Step-by-step explanation:

Divide $20.25 by 15 feet to get around $1.35 per foot.

Then, multiply $1.41 by 21 feet to get your answer...! :>

Thank you to adityakapoor for corrections...!

21 feet rope costs $28.35

Step-by-step explanation:

First, we have to see how much 1 foot rope costs. To do this, we have to do 20.25 / 15

20.25 / 15 = 1.35

Now that we know how much 1 foot costs, now we have to see how much 21 feet costs by doing

1.35 x 21

1.35 x 21 = 28.35

So, 21 feet rope costs $28.35

a) false; the points do not have to be in a straight line.

step-by-step explanation:

the points could be in the shape of a triangle

b is incorrect

c is incorrect because it is saying the immediately don't form one when they are capable of doing so

d is incorrect

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0