Question 1059578
y=b^x
48=ab^2
750=ab^5
divide the last by the middle
750/48=b^3=15.625
b=cube root of 15.625=2.5
a2.5^2=48
6.25a=48
a=7.68
7.68*(2.5^5)=750.
The function is f(x)=7.68(2.5)^x
{{{graph(300,300,-10,10,-30,800,7.68*(2.5^x))}}}
A check is that (4,300) should work. See the graph.