How do you solve this? Which function is graphed? 

A.
y={x^2+6,x≥3
-x+6,x<3}

B.
y={x^2+6,x≤3
-x+6,x>3}

C.
y={x^2+6,x<3
-x+6,x≥3}

D.
y={x^2+6,x>3
-x+6,x≤3}

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$