Solve the system x + 7y = 16 and 3x - 7y = 4 for x. *

The surface area of the triangular prism is .

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.