Good afternoon can anyone tell me the answer

(a,1)(a,2)(a,3)(a,4)(b,1)(b,2)(b,3)(b,4)

For this case, the first thing we must do is define variables.
 We have then:
 C: number of cans
 B: number of bottles
 We now write the expression that represents the total amount she receives:
 0.10B + 0.05C
 
 The expression that represents the amount, in cents, that the center pays her is:
 0.10B + 0.05C