Olivia needs at least $625 to pay for a used road bike that she wants. She has $185 saved so earn $60 per week doing odd jobs for her next-door neighbor. What is the minimum number
will need to work for her neighbor in order to purchase the bike?

I think probably at least 8 weeks.

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°