Which description is paired with its correct expression?

four less than the quotient of a number cubes and seven, increased by three.

five times the difference of a number squared and six.

nine more than the quotient of six and a number cubed, decreased by four.

twice the difference of nine and a number squared.

answer: x

step-by-step explanation:

answer: what in the world is this

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: