Answer: 67 love!
Step-by-step explanation: look at the picture below love!
Answer:
20, thats what is in your little box so that should be the answer
Firs month A
Second month 3A
Third month 3*3A = A (3^2)
Fourth month A(3^3)
Fith month A (3^4)
nth month A (3 ^ (n-1) )
That is an exponential model, because the variable (time, n) is the exponent of the formula.
You should make
465^3=155
That mean that you should put 155+155=310 for the number of psychology textbook
And the number of physics textbook is 155