set of weights includes a 20 lb barbell and 6 pairs of weight plates. Each pair of plates weighs 30 lb. If x pairs of plates are added to the barbell, the total weight of the barbell and plates in poundscanberepresentedby f(x)=30x+20.
#8: Does this graph represent a discrete or continuous situation?
#9: What is the domain & range of the function for this situation?
Domain: 0≤x≤6 Range: 20 ≤ y ≤ 200
Continuous
Discrete
Domain: Range:
Domain: Range:
0, 1, 2, 3, 4, 5, 6
20, 50, 80, 110, 140, 170, 200
0, 1, 2, 3, 4, 5, 6 0, 2, 4, 6
Questions 8 and 9:
Domain:
Range: 20 ≤ y ≤ 200
0, 1, 2, 3, 4,
The graph represents a discrete situation because the number of pairs of plates added to the barbell can only be whole numbers.
The domain of the function is the set of whole numbers from 0 to 6, inclusive. The range of the function is the set of weights in pounds from 20 to 200, inclusive.