Answer:
B 9, -9
Step-by-step explanation:
x^2 - 81 = 0
Add 81 to each side
x^2 = 81
Take the square root of each side
sqrt(x^2) = sqrt(81)
x = ±9
They're both equal. The zero in 95.580 doesn't matter in this comparison.
Answer: it remains constant
Step-by-step explanation: because between 4 and 8 there is no change
Assuming you means 6.5% tax of a $42 purchase
0.065*42=2.73
tax is $2.73
F(5)= 3.(5)+2=15+2=17
Another example: F(0)=3.(0)+2=0+2=2
You just replace the value in the two sides.
