Sara is 33 years younger than rolando. the sum of their ages is 105. select the system of equations if sara's age is represented by s and rolando's age is represented by r.

a. s+r=33
s=r-105

b. s+r=105
r=s-33

c. s+r=105
s=r-105

d. s+r=105
s=r-33

e. none of these

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