Scuba divers know that the deeper they dive, the more light is absorbed by the water above them. on a dive, petra’s light meter shows that the amount of light available decreases by 10% for every 10 m that she descends. a) write the exponential function that relates the amount, l, as a percent expressed as a decimal, of light available to the depth, d, in 10-m increments. b) what are the domain and range of the function for this situation? c) what percent of light will reach petra if she dives to a depth of 25 m?

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3