A scientist conducting an experiment creates a table to record the growth of two plants. The scientist uses the equations below to represent the growth of the plants, where w is the number of weeks of plant growth and h is the height of the plant in inches. Plant 1: 1.75 + one-half w = h Plant 2: 1.75 + three-fourths w = h Which describes the difference in the heights of the two plants in week 5?

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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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f(x)=4

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