: Which situation is best described by this number line?A Ryder owed his mom $2.50. He does some chores and makes $6.25. B B. Ryder had $6.25. He needs to buy school supplies and ends up owing his mother $2.50. C Ryder owed his mom $2.50. He babysits his sister and makes $8.75. D Ryder owed his mom $2.50. He also owes his father $8.75.

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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:

answer: the answer is   graph (a)