In which choice is y a function of x? A. (1, 3), (3, 4), (4, 5), (5, 6) B. (2,0), (2, 3), (4, 5), (6, 7) C. (2,5), (4,8), (6, 10), (2, 12) D. (6,2), (4, 1), (6, 8), (8, 10) I

A

Step-by-step explanation:

If you were to graph each option, only A would pass the vertical line test since no coordinate has the same x value

can you rephrase the question ? it is unclear : -)

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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