Answer:
2n - 3
Step-by-step explanation:
(n-2) + (n-1) = 2n - 3
I see your last line is : c(x) = 0.9(x^2-10)^2 + 101.1
Let y = x^2, then c(y) = 0.9(y-10)^2 + 101.1
Apparently, c(y) is a parabola, min is 101.1 when y = 10, max is infinity
So let x^2 = 10 -> x = sqrt(10) or -sqrt(10), min is 101.1, max is infinity
28min/2lawns = 14min per lawn. Then 14min * 5 lawns = 70min
I would say D. 10/16, 5/8
Hope This helps :)
Answer:d
Step-by-step explanation:
16-4=12 and 16+4=20