Billy has a gift card with a $150 balance. he buys several video games that cost $35 each. after the purchases, his gift card balance is $45. write an equation to find out how many video games billy bought

∠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°