Use the key features of the polynomial f(x) = 5x^2 -2x - 3 to describe its end behavior

A.) the left side continues up and the right side continues down

B.) the left side continues down and the right side continues down

C.) the left side continues down and the right side continues up

D.) the left side continues up and the right side continues up

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:

answer is c

step-by-step explanation:

81/12=324/x

x=48