The gravitational force exerted by the planet earth on a unit mass at a distance r from the center of the planet is f(r) = gmr r3 if r < r gm r2 if r ≥ r where m is the mass of earth, r is its radius, and g is the gravitational constant. is f a continuous function of r? why/why not?

Yes the function is continuous.

Step-by-step explanation:

Given

and

For a function to be continuous we should have

Thus

Similarly we have

thus we can see that

Hence the function is continuous.

26?

step-by-step explanation:

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24