For this case we have to evaluate the following expression,

We must follow the steps below:
We convert the mixed number into a fraction:

We multiply the fractions, taking into account that:

We simplify:

We convert to mixed number:

Answer:

Point A shows that she is incorrect.
With functions, you can perform the "straight line test through each point. If the line goes through both points, you know it's not a function.
If we plotted point A, it'd fail the straight line test because the given point (-6, 7) already has -6 as an x value.
Hope this helps!
Answer:
22
Step-by-step explanation:
Count the dot
total bill before any discounts $13.
she is a student, so she gets 20% off.
she brought an item of clothing, so she gets 5% off.
so she's really getting 20% + 5% off, namely 25% off her bill.

Move all terms not containing x to the right side of the inequality. x < 9