Answer:
$2000
Step-by-step explanation:
The amount of interest you pay (for simple interest) is the product of the original amount, the interest rate and the time in years. Let x be the original amount (how much money she borrowed):
720=x(0.09)(4)
720=0.36x
x=2000
19-14? I think first you need to find sea level.
A cubic polynomial function has 3 zeroes, which is why it is cubic. The student says there are 4 zeroes, which is not possible.