Circle o is shown below. what is the measure of angle bac? 43.5 degrees 46.5 degrees 93 degrees 174 degrees

Given that AOC is the diameter and AO na d OB are the radii, then ΔAOB is an isosceles triangle. Thus the base angles ∠A=∠B
thus
∠BAC=∠A will be found as follows:
sum of angles in a triangle is 180
thus
180-87=
=93
hence
∠A=∠B=93/2=46.5°

46.5°

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

f(-2) = -3f(1) = 6 . . . estimated from f(x) = (x+2)^2-3, which matches points on the graph (-1,-2) and (0, 1)

so the change in y-value for function f is (6 )) = 9.

the table tells us

g(-2) = 1g(1) = 31

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).

Sorry can't answer that question