Question

Will give metal

The equation below shows the perimeter f(x) of several rectangular frames having width x inches:

f(x) = 48 + 2x

The perimeter of each frame is less than 88 inches. Which of the following best describes the domain of f(x)?

Answer 1

@hoblos

Answer 2

The perimeter is 48 + 2x and it less than 88
so what would the inequality be ?

Answer 3

would it be all real numbers greater than 0 and less than 88 ? because it is larger than 0 but less than 88; 0 < x > 88?

Answer 4

the perimeter is less than 88 not x
so 48 + 2x < 88

Answer 5

ok, but is it still all real numbers greater than 0 and less than 88 ?

Answer 6

you have to solve 48 + 2x < 88
do you know how to solve an inequality ?

Answer 7

kind of, sorry, some big stuff happened in my family and its stressing me out and not making me think strait

Answer 8

sorry for that..
so let's solve it
48 + 2x < 88 subtract 48 from both sides
2x < 40 divide both sides by 2
x<20
and as you said before it is larger than 0 since length can't be negative

so what would the domain be now ?

Answer 9

so it would be any real numbers between 0 and 20?

Answer 10

correct

Answer 11

oh ok thanks again :D

Answer 12

any time :)