Answer:

Step-by-step explanation:
We were given the complex numbers;

and

We want to find the product;

We substitute the complex numbers into the expression and simplify:

This is rewritten as:

Note that

We substitute to obtain:
Let us expand to get:

This simplifies to:

This gives:

Just multiply by 0.15 to get the tip amount and add to your original number. This gives you 32.43
Answer:
3/7 - 1/12 is equal to 29/84, which is less than 1/2, so no, it is not greater than 1/2.
Let me know if this helps!
Accuracy is basically how close the given amount is to the actual amount
When getting the "inverse relation" of any expression, you'd always start off by doing a quick switcharoo on the variables, and then solve for "y", let's do so.