Thomas works for a company that occupies a large campus. Every workday, he orders a cup of coffee on campus, and the $1.50 cost is automatically deducted from his paycheck. If Thomas visits the coffee shop 13 times, what will the net change in his paycheck be? A.
-$19.50
B.
-$15
C.
-$13.50
D.
$13.50

A.

Step-by-step explanation:

Multiple the price of the coffee by how many visits he makes: 1.5*13=19.5

So if $19.50 is deducted from his paycheck, he will receive $19.50 less when he receives his paycheck, therefore the net change is -$19.50.

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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