A hiker sets off at 10am and walks at a steady speed for 2 hours due north, then
turns and walks for a further 5 hours
due west.
If he continues at the same speed, what's
the earliest time he could arrive back at
his starting point?

f(x) has value 150 at x= 0

and 0 at x= 3

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

your question is incomplete, write all the numbers in the sequence that it tells you.  

step-by-step explanation:

whole number data type

step-by-step explanation:

as whole number type represents whole number

like 1, 2 ,3, 4

in other words the whole numbers are those numbers which cannot be written infraction.

since we can take days as a whole number i.e 1 day 2 day and we cannot write 1.2 day hence we will use whole number data type