Pls asap ill give brainliest!

can someone solve this equation tell me how many solutions are possible.. and if there is none possible, how come?

-2(x+3) = -2x - 6

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

What is the value for this expression? 2e-5