Ruby bought an animal bank for her nephew. she is the only one who puts money in the bank, and no money is taken out. the function f(v) = 10 + 2y describes the amount in the bank after v visits with her nephew. which statement is true?
1) there was $2 in the bank before the first visit.
2) ruby puts $10 in the bank each visit.
3) ruby puts $2 in the bank each visit.
4) there was $12 in the bank before the first visit.