Answer: C. All real numbers from 10 to 40, inclusive. I took the test myself.
Answer:
Step-by-step explanation:
leading coefficient of 1 ==> a=1
sum of roots= 7+(-5)=2 ==> b= - 2
Product of roots=-35 ==> c=-35
Formula is<u> y=x²-2x-35</u>=(x-7)(x+5)
The number of people after n years is calculated through the equation,
An = (Ao)(1 + r)^n
where An is the population after n years, Ao is the initial population and r is the rate. Substituting the known values,
420 = (380)(1 + 0.03)^n
The answer is letter A.
