Zeros: x = 2, x = 4
Turning point: (halfway between the zeros) x = 3, y = -1
y-intercept: where x=0, at f(0) = 8.
Axis of symmetry: the vertical line through the turning point: x = 3.
<span>the height of an equilateral triangle = s</span>√3/2
The given inequality is y ≥ |x + 2| -3.
This inequality may be written two ways:
(a) y ≥ x + 2 - 3
or
y ≥ x - 1
(b) y ≥ -x -2 - 3
or
y ≥ -x - 5
A graph of the inequality is shown below. The shaded region satisfies the inequality.
Answer: A shaded region above a solid boundary line.
Colby and Cheryl work in different local supermarkets. Colby regu-
larly earns $8.90 per hour, and he is paid time-and-a-half for each
hour of overtime he works. Cheryl regularly earns $7.10 per hour,
and she is paid double time for an hour of overtime. Who earns
more for one hour of overtime? How much more?
