Find the exponential function passing through points (-1,4/3) and (3,108)

An exponential function is in the general form  

Explanation:

(x,y) = (-1,4/3) and (x,y)=  (3,108) are the given functions  

Therefore,  

         - eq(1)

Multiply both sides of the first equation by b to find that

Substituting in eq-2 we get

which gives a = 4,  

henceforth the equation becomes as  

which gives a = -4,  

henceforth the equation becomes as y =  

However! In an exponential function, b>0, otherwise many issues arise when trying to graph the function.

The only valid function is        

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation: