Trying to solve a two step eqation and just need the icing on the cake so,

12 x ? = 216

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Calculate the average rate of change over the interval [1, 3] for the following function. f(x)=4(5)^x a. -260 b. 260 c. 240 d. -240

What is the radius of the cone in the diagram? round your answer to the nearest whole number