can someone help me using the substitution method for these two equations. first equation is y= -22² Y and the second equation is y= - 3x -4

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

Which statements are true about additional information for proving that the triangles are congruent check all that apply

Stefanie is painting her bedroom. she can paint 2 1/3 square feet in 4/5 of an hour. how many square feet can she paint in one hour?