Mary needs to buy bread and milk for her church picnic. At a supermarket A, she would pay $44.20. At supermarket B, she would pay $ 44.70 Which of the following system of equations represents this situation?

Y=4x^2+x-1 solve using quadratic formula

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.