X^2 - 8x-9=0
D = b^2- 4*a*c = 64- 4* (-9) = 64+36=100 =10^2
X1 = (8-10)/2 = -1
X2= (8+10)/2= 9
Answer: 8.525
Step-by-step explanation:
Answer:
for the first one its: y=-3/4x+9
for the second one its: already done
Step-by-step explanation:
The answer is B) Exponentially, shows a constant percentage in sales per month
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