You're original equation has a -81, so the factored form will have to have a positive and negative multiplying one another to achieve that...
f(x) = x(x + 9)(x - 9)
Answer:
I believe it’s the 3rd option but I’m not completely confident
Step-by-step explanation:
who am I kidding I’m never confident lol
16.
1/2= 0.5 and it takes 16 months to get to 8 inches.
0.5x16=8
The sales tax is $7.67
In total, with the sales tax, the phone would be $92.65