The amount Javon saves when using a percent-off coupon is proportional to how much he spends. Identify the proportional equation for this relationship in the form y=kx Multiple choice question. cross out A) y=4x cross out B) y=5x cross out C) y=0.2x cross out D) y=0.25x

d

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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