I need help im in 6 grade

The graph of fx shown below has the same shape as the graph of gx = 3x^2 but is shifted down 2 units

What is (28 + 7 + 6 + 3) x 1/2 show your work

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account. write an expression to represent the total amount in his savings account.