Question

A small business makes greeting cards and sells them online. Each card costs $3 in materials and labor, and there is a fixed monthly cost of $100 for advertising. If the total costs last month were $640, write an expression to find the number of cards made.

Answer 1

Let's denote the number of cards made as "x".

The total cost can be calculated by adding the cost of materials and labor per card to the fixed monthly cost of advertising and multiplying it by the number of cards made:

Total cost = (Cost per card * Number of cards) + Advertising cost

Total cost = (3 * x) + 100

We know that the total cost last month was $640, so we can set up an equation:

(3 * x) + 100 = 640

To solve for "x", we can subtract 100 from both sides and then divide by 3:

3 * x = 540

x = 180

Therefore, the expression to find the number of cards made is:

(3 * x) + 100 = 3 * 180 + 100 = 640

~~~Harsha~~~