Question

Need help on these easy questions

Answer 1

I know that the answer to one of them is 2y

another is 10y+3

Answer 2

2.
A) 8s (s = number of students)
B) 15 + 2s
C) method b because 15 + 2(10) = $35 while method a = 8(10) = $80

3.
A) 2c (c for # of cups)
B) 10p + 3
C) 35j - 10