Final answer:
The correct expressions to calculate the sales tax for a computer at Store A are 6%(\$1,200) and 0.06(\$1,200), which correspond to options a) and c).
Step-by-step explanation:
The student is asking how to calculate the correct amount of sales tax for a computer purchase from Store A. To find the sales tax, we convert the percentage to a decimal and then multiply it by the total cost of the computer. In the case of Store A, the sales tax rate is 6 percent.
Option a) 6%(\$1,200), when translated into a calculation, is 0.06 x \$1,200 which is the correct method to find the sales tax.
Option b) 0.6(\$1,200) uses the incorrect decimal equivalent of 6% (which should be 0.06, not 0.6), option d) One-sixth(\$1,200) incorrectly represents 6 percent, and option e) 3^(-2)(\$1,200) is an incorrect mathematical representation unrelated to the percentage calculation.
Therefore, the correct expressions to show the amount of sales tax for the computer at Store A are:
- 6% (\$1,200)
- 0.06 (\$1,200)
This means options a) and c) are correct.