Answer:
Step-by-step explanation:
The slope is given by change in the ordinate divided by change in the abscissa.= Y2-Y1/X2-X1
=6-4/1+5= 2/6= 1/3
Answer:
I am not entirely sure but The maximum is 500 and b $0.50
Answer:
120°; 240°
Step-by-step explanation:
Let's first solve for 
: 
At this point it's just a matter of drawing a circle, and mark where the angle is(please excuse my paint skills, but free hand drawing would be even worse). Red line, is 
on the cosines, and both the green and blue lines are valid solutions. The green line is a quarter of a circle, plus 30°, or 120°. The blue one is 3/4 of a circle, minus 30 degrees, or 240°.
First you have to set up your equation. 5x+80 and x+15.
