Functions f(x) and g(x) are shown below: f(x) = x2 g(x) = x2 + 8x + 16 in which direction and by how many units should f(x) be shifted to obtain g(x)? (a) left by 4 points (b) right by 4 points (c) left by 8 points (d) right by 8 points

I just took the test it's left by 4 units

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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: