Question

An online video store charges $24 please help

Answer 1

Answer:

B. 24d + 4; $76

Step-by-step explanation:

Part 1: If the online store charges $24 per DVD, this is the same as saying "24 multiplied by the number of DVDs bought".

It's given that "d" represents the number of DVDs

• So the first part of the variable expression is: 24d

If the online store also charges an additional $4 per order, that means that it's only $4 extra for the whole order. NOT per DVD you buy.

• Result: 24d + 4

Part 2: If someone were to buy 3 DVDs, that would mean that d = 3.

To find the total cost, substitute 3 for d into the expression.

• 24d + 4
• 24(3) + 4
• 72 + 4 = 76
• Result: $76