Identify the four step used to solve this equation 4(x-7)=2x-6

With #! i’ve tried to figure it out but i can’t.

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?