2.1w ipod is used for 30 minutes. how much energy does it use

The energy is 3780 joule

Step-by-step explanation:

we are given

Total power is 2.1 watt

so,

P=2.1 W

total time is 30 minutes

now, we can change in seconds

we know that

1 min =60 seconds

so, we get

we know that

Energy = power*time

we can plug value

So,

The energy is 3780 joule

third option: 6x+8

step-by-step explanation:

we can see that the given question is a sum of series and the values of n vary from 0 to 3

the first term will be:

when n=0, [(0)*x+2] => (0+2) => 2

when n=1, [(1)*x+2] => (x+2) => x+2

when n=2, [(2)*x+2] => 2x+2

when n=4, [(3)*x+2] => 3x+2

so adding up all the terms will give us:

=2+x+2+2x+2+3x+2

=x+2x+3x+2+2+2+2

=6x+8

so,

third option is the correct answer ..

you have to put the graph on here with the question

step-by-step explanation: