Write a equation for Andrew math teacher entered the seventh grade students in a math competition. There was an enrollment fee of $30 and also an $11 charge for each packet of 19 tests. The total cost was $151. How many tests were purchased

Solve the equation by completing the square. x^2+2x=17

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.