What the is the answer to this i can't get it to graph on my calculator

B

Step-by-step explanation:

Taking an algebraic approach

If f(x) = f(- x) then f(x) is Even

If(- x) = - f(x) then f(x) is Odd

f(- x) = + 12 - 14 + 13

       = + 12 - 14 + 13

Since f(x) = f(- x) then f(x) is Even → B

im pretty sure its

(8,15)

step-by-step explanation:

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: