The cheer squad is ordering small towels to throw into the stands at the next pep rally. The printing company has quoted the following prices. Which function defined below represents the cost, C, in dollars for an order of x towels?

“Growl” Towel Price Quote

Number of towels ordered
Cost per towel
First 20 towels
$5.00
Each towel over 20
$3.00

C

            5x,0<x<20

C(x)={3x+100, x>20

Its D

Step-by-step explanation:

i just took the test on edge, the other guy is wrong

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: