Question

2. O

Mia buys ink at the office supply store for a business.

She buys 3 printer cartridges, and the sales tax is 7%. Write an expression

to represent the total cost of ink supplies in two different ways.

Answer 1

3c+3c(0.07)

Explanation:

Answer 2

The total cost of the ink supplies can be represented in two different ways, as follows:

a. 3p (1+r)

b. p * (1+ r) * 3

Explanation:

a) Data and Calculations:

Number of printer cartridges bought = 3

Sales tax rate = 7%

The total cost can be represented as:

Total cost = 3p (1+r)

where p = the price of a printer cartridge

and r = the sales tax rate

Alternatively, the total cost can be represented as:

Total cost = p * (1+ r) * 3

b) Whichever expression is used, the total cost derived will remain the same. The first expression includes the sales tax in the total cost, while the second expression includes the sales tax in the cost of the unit before arriving at the total cost.