Consider the function f(n) that models the number of man-hours required to manufacture (n) lawn mowers that are ready to ship. 1) which describes an appropriate domain for the function f(n)? a) all integers where n ≥ 0 b) all real numbers where n ≥ 0 c) all rational numbers where n > 0 eliminate d) all rational numbers where n ≥ 0 2) which function notation uses an appropriate domain for the function f(n)? a) f(−1) = 2 b) f(− 1 2 ) = 2 c) f( 1 2 ) = 2 d) f(1) = 2

answer: i think it is (1,-2)

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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