*20 POINTS* The total number of seats in an auditorium is modeled by f(x) = 2x^2 - 6x, where x represents the number of rows of seats. How
many rows are there in the auditorium if it has a total of 540 seats?

A) 15
B) 22
C) 30
D) 18

D) 18

Step-by-step explanation:

2x² - 6x = 540

2x² - 6x - 540 = 0

(2x + 30)(x - 18) = 0

x - 18 = 0

x = 18

2x + 30 = 0

2x = -30

x = -15; this cannot be the answer as it is negative

the interest rate for an initial investment of $100,000 to grow to $300,000in 10 years? Rate 300,000 100,000 10r = (Future Value / Present Value )(1/t)-1r = ($300,000/$100,000)(1/10)-1= 0.116111.61% 4.

the present value of $100 is $100. Because this $100 dollar is deposited today so the time is equal to zero and when time is zero the value of amount is the value of amount itself