Kareem has 7 pieces of paper cut into squares. He wants to find the perimeter of each square. Write a rule for a function, P, that gives the perimeter of a square in inches when the side length is x inches that will help Kareem. Write your rule in function notation. Was there any extra information in problem #3 you didn’t use to write your function? Explain.

What is the value of P(9.1)? What does it tell us about the side length and perimeter of the square?

35 is an outlier

step-by-step explanation:

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.

answer: 60%

explanation:

÷

= 60%