Which equation would you use to solve the following situation?

molly buys some concert tickets at $10 each. if she spends $90 on the tickets, how many did she buy?

90 -t = 10
10t = 90
10 + 90 = t
9t = 90

According to the national center for health statistics, in 1990, 28 % of babies in the united states were born to parents who were not married. throughout the 1990s, this increased by approximately 0.6 % per year. if this trend continues, in which year will 52 % of babies be born out of wedlock? in__52 % of babies will be born out of wedlock