Sorry, for part C it is actually $2000
(108(8years)+150)/8 = 295.5
(108(12 years) + 150)/12 = 274.66
The 2nd system has a lower average yearly cost over it's lifetime
Correct?
Homework Statement
A security system costs $9/month in costs (fixed cost). If a new security system costs $1500 to purchase and last for 8 years:
a)Determine the rational function that gives the annual cost of a security system as a function of the number of years you own the system. Using...
Homework Statement
A scientist predicted that the population of fish in a lake could be modeled by the function f(t)= 40t/(t^2+1), where t is given in days. The function that actually models the fish population is g(t)=45t/(t^2+8t+7). Determine where g(t)>f(t).
Homework Equations...
y=-(x-3)^5(x+1)^4
For this function currently i have:
degree: 9
sign: negative ?
quadrants: I, II and 4
Roots: x=3 and -1
y-intercept= 243
domain: x belongs to E
range: y belongs to E
INTERVALS of INCREASE : ?
INTERVALS of DECREASE : ?
End Behaviors: As x approaches -infinity, y...