Complete the steps in solving the quadratic function 7x – 9 = 7x2 – 49x by completing the square. fill in the blanks. –9 = 7x2 – x –9 + = 7(x2 – 8x +

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)