Rhea is solving a math puzzle. to find the solution of the puzzle, she must find the product of two numbers. the first number is the sum of 23 and x, and the second number is 18 less than two times the first number. which of the following functions represents the product of these two numbers?

First number = 23+x

Second number = 2(23+x)-18 = 46 +2x -18 = 2x +28

Now multiply each term by each term :

23 +x * 2x +28

23 * 2x + 23 * 28 + x *2x + x*28=

46x + 644 + 2x^2 + 28x =

Final answer = 2x^2 +74x +644

The answer is D.

The product of two numbers is  

Step-by-step explanation:

We are given that The first number is the sum of 23 and x,

First number = 23+x

The second number is 18 less than two times the first number.

Second Number =

The product of two numbers :  

Let P(x) denotes the product

So, The product of two numbers is  

Hence Option D is true .

The product of two numbers is  

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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