Kaitlin received a $90 gift card for a coffee store. She used it in buying some coffee that costs $8.71 per pound. After buying the coffee, she had $55.16 left on her card. How many pounds did she buy?

Solve 2x+y=3 x+y=5 in substitution method

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?