A school’s math department has money to spend on calculators. It uses the equation y = 1,000 – 80x to determine how much money is left in the account to spend on calculators, where x represents the number of calculators purchased. What is the meaning of the slope of the equation? A. Each calculator costs $1,000.

B. The account had $1,000 before buying calculators.

C. Each calculator costs $80.

D. The account had $80 before buying calculators.

C. Each calculator costs $80.

Step-by-step explanation:

Linear equation:

Has the following format:

In which m is the slope, and the meaning is how much the output changes when the input changes by 1 unit.

In this question:

Amount remaining after buying x calculators:

So the slope of -80 means that each calculator costs $80, since after buying a calculator, 80 is retired from the amount.

The answer is given by option C.

B) $66

Step-by-step explanation:

Deposit means your putting money in your bank account.

50 - 11 = 39

39 + 27 = 66