You begin with $30 in a savings account and $60 in your checking account. Each week you deposit $10 into your savings and $20 in your checking. After how many weeks is the amount in checking twice the amount in the savings?

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

Find the measure of anglec in the following triangle

Solve the system of equations. x=-2y+1 and x+2y=9. show work