\[\sum_{n=1}^{7} 2(-2)^{n-1}\]
Copper because that's what wires are made from and they help transport electricity
All you need to do is plug in some x values and find the correspoding y value
when x=0, y=-3
when x=1, y=9
when x=2, y=21
when x=-1, y=-15
Step-by-step explanation:
<u>Substitute f(0) into the function:</u>

<u>Include exponent:</u>

<u>Multiply:</u>

Answer:
she had lots of paint
Step-by-step explanation:
ur welcome boo