Mrs. Smith wants to leave a 15% tip for the waitress. If the cost of the meal is $65.99, how much would the waitress receive for the tip (to the
nearest cent)?

$9.90

Step-by-step explanation:

65.99 x 0.15 = 9.90

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).