Question

(20 points will get brainliest)

Answer 1

Answer:

$y(x)=19*x$

Step-by-step explanation:

Given the height of 6 DVD cases, you can know the height of a single DVD case, by dividing the total height, in the number of cases ($\frac{114mm}{6} = 19mm$ for this problem).

Now, knowing the height of a single DVD case ($19mm$), you can think the expression in this way: If I already know the height of a single case, the height of any number of cases will be the result of multiplying the height of the case by the number of cases I want to stack.

As the problem states, x is the number of cases in the stack, so, multiply the height of a single case for the number of cases (x).

This will result in the expression: $y(x)=19*x$

To know the height of a stack of 13 cases, just replace x=13 in the equation you just figured:  $y(13)= 19* (13) = 247$ , but don't forget the unit is mm, so the final result is 247 mm.

Answer 2

Y = 19x

The height of 13 would be 247mm