Which tables represents a function? Select all that apply.
х
y
0
у
1
mix
1
3
1
2
2
6
A
2.
4
B
3
15
3
6
4
9
9
4
8
5
5
3
х
y
у
1
-2
1
4
2
-1
3
2
3
D
С
2
3
الا
3
4
-1
3
2
5
-2
4

a .4y4

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step-by-step explanation:

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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: