The equation for line k can be written as 4x+7y=7. Line l includes the point (7,3) and is parallel to line k. What is the equation of line l?

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.