asha is measuring the charge c(t) in a battery that has been charged for t minutes. Which of the following is the most appropriate domain for c(t)?

Question

anonymous · Answer

A all real numbers 
B Positive Integers Only
C all positive numbers 
D all integers

perl · Answer

well you cant have negative time, and you can have time in decimals of minutes (doesnt have to be integers)

kl0723 · Answer

time is a fucntion of the charge as x is a fucntion of y, but in this case as @perl mentioned time cannot be negative and it could be expressed as minutes or seconds, so all positive numbers seems to be right

kl0723 · Answer

I expressed that wrong xD

perl · Answer

C