Write an expression to describe the sequence below. use n to represent the position of a term in the sequence, where n = 1 for the first term. -68, -136, -204, -272, questions

Moesha is (3g+1) years old and shanti is twice moesha age. find the sum of the ages of moesha and shanti in 2 years time. how old will shanti be when moeshas age in twice her present age? find how old moesha and shanti were 4 years ago if g= 5