Please help me get the question thankyou ​

The square root of 9x plus 7 plus the square rot of 2x equall to 7

Find the maximum value of p= 4x + 5y subject to the following constraints :

28 x 12 + 34 = ? it's for a test that if i fail on i will not proceed into the honor roll society i always dreamed of!me! worth 50 !