Answer:
battery costs $5, tax is $1.20, and so the total is $26.20
Step-by-step explanation:
If this can be modelled by exponential decay, therefore
the function must be in the form of:
A = Ao (1 + r)^t
where A is the final value, Ao is the initial = 15000, r
is the rate of decay = -0.0015, t is time = 2010 – 1990 = 20
A = 15,000 (1 – 0.0015)^20
A = $14,556.36
Answer:
40
Step-by-step explanation:
f(n) = 5 + (n - 1)(5)
f(n) = 5 + 5n - 5
f(n) = 5n
n = 8
5(8) = 40
