A certain number of plants have been purchased to be planted in rows in a garden. If the plants are planted 6 plants per row, 8 plants per row, or 10 plants per row, there is always 1 plant left over. What is the minimum number of plants that were purchased?

A.) 49
B.) 61
C.) 81
D.) 121
E.) 481

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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step-by-step explanation: