L=510−42t The old road length, l, in meters, after t hours of milling is given by the equation above. How many meters of old road are removed for each hour of milling?

Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.

Which of the following circles have their centers in the third quadrant?

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.