Answer:
Step-by-step explanation:
The graph below is how you label the points, where to put them and the line that you need to draw to get the points.
Everything is laid out for you to copy. Start at the lower right and go to the to the upper left on your table.
Answer:
a)
b)
Step-by-step explanation:
a)
Assume that r is a regular price before discount and tax
Including discount, we substract 5 from r. We get (r-5).
Then, we include tax by adding 5% value of (r-5)
Including a tax we may realize by multiplying initial value (r-5) by 1.05, where an ending .05 is percentage value of a tax
b)
in a formula we substitute r=15.50 and calculate the value on the right side of the sign "=".
You solve it too, using a calculator.
If you push the following buttons:
1 5 . 5 0 - 5 = + 5 %
you should get a result 11.025, after approximation to the 2 digits after comma there is 11.03
