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

answer:

i am not 100% sure but i think the answer is b

step-by-step explanation:

hope this is correct

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3

i would say b) is your answer

sorry if im wrong

step-by-step explanation: