How many 3-digit numbers can you write using only digits 1 and 7 if the digits can repeat?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

See attachment below and find the equivalent of tan(∠qsr)