1. The cost C (in dollars) per unit of making x photocopies at The Office Shop is given below. • 18 cents for at most 20 copies
• 12 cents for more than 20 copies up to 50
• 9 cents for more than 50 copies but less than 100
• 5 cents for 100 copies or more but up to 200
• 3 cents for more than 200 copies

Part A: Write the piecewise-defined function that represents the situation.

$35.59 in pounds

step-by-step explanation:

3; 9 is 8 to -4

step-by-step explanation:

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

there are infinitely many solutions.