( 0, -4 ) is the vertex of the parabola
Answer:
8(+4)
Step-by-step explanation:
Answer: 30% of decrease
$13.95 - $10 = $3.95
$13.95___100%
$3.95___x= 28.31%
(3.95*100) / 13.95 = 28.31 = 30
