20 a lamp manufacturer has daily production costs of c = 0.25n2 – 10n + 800, where c is the total cost in dollars for n lamps produced. what is a reasonable domain for this function, given the problem's context?
a) all integers
b) all real numbers
c) all positive integers
d) all positive real numbers

20 points 1. your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph. 2. taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1