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dangina [55]
4 years ago
9

Write an expression for the amount of change you will get when you pay for a purchase p with a 20 dollar bill. Make a table to f

ind the amounts of change you will get for purchases of 11.59 17.50 19.00 20.00
Mathematics
2 answers:
White raven [17]4 years ago
7 0

Answer:

Let p be the purchase price, and c be the change.

The amounts of change means 20 dollars minus purchase amount.

The expression becomes:

20- p =c

When p = $11.59

c = 20-11.59

c = $8.41

When p = $17.50

c = 20-17.50

c = $2.50

When p = $19

c = 20-19

c = $1.00

When p = $20

c = 20-20

c = $0.00

Mashutka [201]4 years ago
3 0

change,c = 20 - p

so in Excel for example

put 20 in column a

put 11.59, 17.50 etc in column b

in column c put the equation '=20 - b1'

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