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the table below shows the amount g(r), in dollars, after r years

r(number in years) 1///2
g(r) (amount in dollars)9,638///18,794.10

what was the percent change from year 1 to year 2?

48.72%

Step-by-step explanation:

(18794.10-9638)/18794.10*100 = 9156.1/18794.10*100 = 48.72%

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: