Omar has $300 in his savings account and deposits $20 each week. His brother has $600 in his savings account, but he withdraws $30 each week. After how many weeks will they have the same amount?

Let r = 3. what is the value of r + 58?

3x + 4y = 5 x- 3y = -7 solve by substitution

Drag each expression to the correct location on the solution. not all expressions will be used. consider the polynomial 8x + 2x2 - 20x - 5. factor by grouping to write the polynomial in factored form.