8. It used to be standard to leave a tip of 15% on the total of a bill that you get at a restaurant. e challenging than a 10% or 20% tip but can still be done using our 10% shortcut.
Find the tip you should leave on each of these totals. Show your calculations.
(b) Total bill of $68.00
This is more
(a) Total bill of $40.00

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.

What are two numbers that have a sum of 15