Question

The estimated total cost, y, of a child’s toy is partially based on the number of batteries used, x. The cost of one battery is $0.75. The toy itself costs $12. Which equation represents the situation?

Answer 1

The answer is:
y=0.75x+12

Answer 2

y = 12 + 0.75 x

Explanation:

Here, x represents the number of batteries used for a toy and y represents total estimated total cost,

Since, the cost of a toy = $ 12,

And, the cost of one battery = $ 0.75,

⇒ The cost of x batteries = 0.75 x dollars,

Since, total cost = the cost of the toy + the cost of x batteries

⇒ y = 12 + 0.75 x

Which is the required equation that represents the given situation.