Apark started with 12 oak trees, and the number of oak trees increased at a rate of 25% each year. write the function that models the situation, substituting numerical values for a and r into the expression.

The function which models the situation is as The number of oak trees increase after n year = 12 ×  

Step-by-step explanation:

Given as :

The number of oak trees planted in park = 12

The rate at which number of tree increase each year= 25%

Now,

The number of oak trees increase after n year = Present numbers of tree ×

Or,

The number of oak trees increase after n year = 12 ×

Hence The function which models the situation is as The number of oak trees increase after n year = 12 ×  Answer

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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