When aluminum metal reacts with copper (ll) sulfate to produce aluminum sulfate and copper metal, what is the coefficient for copper(ll) sulfate when the equation is balanced?

The coefficient for copper (II) sulfate is 3 when the equation is balanced.

Explanation:

This is the reaction:

3Al(s)  +  3CuSO₄ (aq)  → 3Cu(s) + Al₃(SO₄)₃ (aq)

Part A
Chorus:
Expontential growth = b*a^x 
b = 15
a = 1.12              (a= r+1), r = 12%

Which gives a function of f(x) = 15*1.12^x 

Band
Linear growth = ax+b
a = 2
b = 30

Which gives a function of g(x)=2x+30

Part B:
f(9) = 15*1.12^9 = 41.59
g(9) = 2*9+30 = 48

Part C:
This is probably problem solving, where you're allowed to use calculators and other softwares.

Therefore you can use different softwares, and make f(x) = g(x).
I did this, and got it to 10.95427141

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