I sent help but no one answered :(
Jk, I got you fam
12(t + 2) + 4 ≥ - 8
12t + 24 + 4 ≥ - 8
12t + 28       ≥ - 8
12t               ≥ - 8 - 28
12t               ≥ - 36
t                  ≥ - 36 ÷ 12
t                  ≥ - 3
Solution:
t ≥ -3
 
        
                    
             
        
        
        
T(t)=e−kt(∫ekt[KM(t)+H(t)+U(t)]dt+C)
M is the outside temperature, H is other things that affect temperature
in the tank(0 in this case), and U is the solar panel. K comes from the
time constant, and should be the inverse of the time constant I believe.
T is temperature, t is time.
T(t)=e−164t(∫e164t[164(80)+4t]dt
After integrating I keep getting
−16304+256t+Ce−164t
I calculate C to be 16414 setting t equal to 0 and using the initial conditions
        
             
        
        
        
104 is the answer to your problem
        
             
        
        
        
For 3 s'more u need 6 graham crackers , and 3 marshmallows
        
             
        
        
        
2 over 11, 7, 7.118, 57 over 8, 7.26