solve !

12+ 11/12 ≤ + 3x

pick all the ones that apply?

a. the solution set is {6, ∞} for x ∈ r.
b. the solution set is {6, 7, 8, …} for x ∈ n.
c. 6 ≤ x
d. the value of a number substituted for x is greater than 6.
e. for x ∈ r
f. for x ∈ n

answer: a

step-by-step explanation:

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:

because that’s us why

so u can mark brainlist