the function f(x)=5(2)^2 was replaced with f(x)+k, resulting in the function graphed below.
what is the value of k?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Which of the following vectors are orthogonal to (2,1)? check all that apply

The graph below shows the line of best fit for data collected on the number of cell phones in cell phone cases sold at the local electronic store on four different days