Apair of socks is purchased
at wholesale for $2.00. it is
then sold for $4.00 to the
customer. what is the
percent increase?

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42