Write the equation of the line that has a slope of - 2/3 and a y-intercept of (0,-7)

How to write 3 tenths and 5 tenths as a decimal

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters

What does independent variable and dependent variable mean in math?