If the graph of #y=AB^x# passes through the points (2,3) and (5,81), then what is the value of B?
1 Answer
Feb 27, 2017
Explanation:
Substitute the 2 given points into the equation.
#(2,3)to3=AB^2to(1)#
#(5,81)to81=AB^5to(2)#
#"dividing "(2)" by " (1)#
#rArr(cancel(A)B^5)/(cancel(A)B^2)=81/3#
#rArrB^3=27#
#rArrB=3#
