Hi, there can someone me with numbers 1 and 2 how to prove that what there saying is correct

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks