I really need help no one will help me

∠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°

c: lkllmn.

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the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

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130 degrees. i have no other way to explain