Angle A is circumscribed about circle O, what is the measure of angle D??

Write an inequality and solve each problem.for exercises 11 and 12, interpret the solution.

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)