Answer:
28
Step-by-step explanation:
Volume = Area of cross section x length
= (1/2 x 2 x 4) x 7
= 28
Since we know the cube of 2 is 8 and the cube of 3 is 27, we know it must be between these two numbers, and since 25 is much closer to 27 than it is to 8, we can say the closest integer is 3.
A vertical line is represented by x = a number
so ur vertical line is : x = 4 <==
** and just so u know, a horizontal line is represented by y = a number.
Well to find the mean you need to add up the total number of people and then divide by the total number of days meaning if there is a total of 105 people, you would divide that by 5 and get 21
13 + 23 + 24 + 31 + 14 = 105
105 / 5 = 21
For this, since 4y - 7 and 2y - 1 are congruent, we can solve for y by setting them equal to each other.
Firstly, subtract 2y on both sides of the equation. 
Next, add 7 on both sides of the equation. 
Finally, divide 2 on both sides of the equation, and your answer will be y = 3
