At RubberWorks, several pieces of rubber are tested each day for hardness. Hardness is measured in IRHD (International Rubber Hardness Degrees). Each piece of rubber is allowed to cure for several hours before testing. A quality team makes this graph.
What does the graph tell them?
Rubber Hardness
90
N 80
70
등
60
50
40
30
20
10
25
20
Cure Time (in Hours)
Select the correct answer.
A. They should graph different types of rubber in different colors.
B. Rubber must be allowed to cure for at least 16 hours.
Ос.
Rubber must be allowed to cure for at least 20 hours.
OD
Rubber gets stronger the longer it cures,