is the graph a function shown in the graph below one-to-one? why?

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  (d) one output for every input

Step-by-step explanation:

A function is 1-to-1 if its graph passes the horizontal line test: a horizontal line may intersect the graph in only one place.

step-by-step explanation:

this is not a question

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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