PLS HELPP ME PLSSS

Select a graph that have an equation with a < 0

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.