Katya has several sources of income, listed in the table. Which are considered earned income? *Select all that apply.* $150 she earned from her website's ad revenue

$80 she received from an investment

2% commission on all sales

$250 per month child support

$1300 per month salary

$1300 per month salary

2% commission on all sales

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

answer4 to the second power is 16

and 4 to the third power is 64,