Roberto got $30 for his birthday. he decides to save that
amount and add $5 to his savings each week. jack starts
saving the same day as roberto and puts $8 in his
savings each week. after how many weeks will the boys
have the same amount in savings?

Nine more than four times a number is the same as one less than twice the number. find the number?

Could somebody me with this radical simplification?

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]