Answer:
Mate im sorry for replying here but i need points to ask a question.
All Triangles are equal to 180° on a plane surface no triangle is equal to 180° on a curved surface.
drawing isn't shown, pls take a screenshot or photograph the exercise
240 each 10 percent is 30 calories multiply them by ten gets you 300
X intercept is when y = 0
3x -15(0) = 60
3x = 60
x = 20
y intercept is when x=0
3(0) -15y = 60
-15y = 60
y = -4
Answer is C