Answer:
9m^2 - 12mn + 4n^2
Step-by-step explanation:
D. No x value has more than one y value so it's a function.
$3, $1, $5, $2, $3, $9, $1 = $24 - $1 = $23 - $1 = $22.
$22 is the estimation of the bill when all of the amounts are rounded to the nearest dollar. The estimation is greater than the total bill which is 23 cents less than the estimation. The total on the register is reasonable and accurate.
The answer is 16 hope this helps you.
