Acircle divided into 5 equal parts. what is the total angle measure of 4 parts

The function show two sisters' savings account and the rate at which they plan to deposit money

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)

F(x)=3(1.54)^x whats this how do you do it