This is a portion of the graph of a polynomial function. Apparently the function has a double zero - a. between -2 and 1
b. between 3 and 4
c. between -2 and -1
d. between 1 and 2

∠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°

468

step-by-step explanation: