Answer:
The natural numbers along with number 0 (zero) form the set of whole numbers i.e., 0, 1, 2, 3,, are whole numbers. The set of whole numbers is denoted by . = {0, 1, 2, 3, …} Set of natural numbers is the proper subset of the set of whole numbers.
Step-by-step explanation:
F(h) = 40h + 120....when f(h) = 200
200 = 40h + 120
200 - 120 = 40h
80 = 40h
80/40 = h
2 = h <=== 2 hrs
0.68.....the last digit (8) is in the hundredths place...so put the 68 over 100 and reduce.
68/100 = 17/25
They are NOT because supplementary angles add up to 180