Classify this triangle by its sides and angles. -obtuse and isosceles-
-right and isosceles-
-obtuse and scalene-
right and scalene-

Right and isosceles

Step-by-step explanation:

Classification by sides: Isosceles  because two sides are equal.

Classification by angles : Right angled triangle  because one angle is 90°.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50