Two friends, Kayla and Kylie, took summer jobs. Kayla earned $744.80 in 38 hours. The table below represents Kylie's earnings in dollars and cents, y, for working a
hours.
Kylie's Earnings
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Hours (x) Earnings (y)
14
$355.60
21
$533.40
35
$889
38
$965.20
How much more does Kylie earn per hour than Kayla?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

The triangles are similar. what is the value of x? show your work.