Abbee and Robert are having chessy puff eating contest . Robert knows that he can eat faster than abbee so he gives abbee a sporting chance bu spotting her 20 chessy puffs Robert can eat chessy puffs t a rate of 5 per second and abbee rate a measly 2 per second. A) write an equation using variables symbols that would determine how many chessy puffs each person could eat for any given minute.

B) at a point during the contest are abbee and Robert tied or equal

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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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