evaluate if x = 3, y = 2, and z = 5.

4xyz
z2 - x2

120

16

Step-by-step explanation:

Givens

Solution

4xyz = 4(3)(2)(5)

4xyz = 30 * 4

4xyz = 120

z^2 - x^2

5^2 - 3^2

25 - 9

16

Step-by-step explanation:

d = DVD player, with $75 profit

For every DVD player sold, the shop would earn 75d

c = cordless phone, with $30 profit

For every DVD player sold, the shop would earn 30c

The total profit of the score would be the profit from d and c summed up, which is: 30c + 75d

"The store wants to make a profit of at least $255.00 from its sales of DVD players and cordless phones."

This is merely a fancy way of saying that the total profit should be equal to or bigger than $255

The inequality would then be: 30c+%2B+75+d+%3E=+225

If wanted, it can be simplified with a simple division by 15