A student needs to make a circular cardboard piece with an area between 154 square inches and 616 square inches. The function f(r) relates the area of the cardboard piece, in square inches, to the radius r in inches. Which of the following shows a reasonable domain for f(r)?

7

Question

A student needs to make a circular cardboard piece with an area between 154 square inches and 616 square inches. The function f(r) relates the area of the cardboard piece, in square inches, to the radius r in inches. Which of the following shows a reasonable domain for f(r)?

 7 < r < 14

 154 < r < 616

 all positive integers less than 7

 all positive integers between 14 and 154

henrietepurina · Answer

pls help me buddy
@kc_kennylau

henrietepurina · Answer

i only got abut 10 left!
(not a joke)

kc_kennylau · Answer

A

kc_kennylau · Answer

You do realize that you can learn nothing with all the answers

henrietepurina · Answer

i know but this is just a practice test

henrietepurina · Answer

wuh wuh wait, why A?

kc_kennylau · Answer

If you don't get the concept you'll not learn anything

kc_kennylau · Answer

Domain is what r can be

kc_kennylau · Answer

area=154 --> r=7
area=616 --> r=14

henrietepurina · Answer

ahhh