Solve. Use Interval Notation to Express the Range

question 47

Multiple Choice

Solve. Use interval notation to express the range.
-On the first four exams, your grades are 79, 82, 75, and 80. There is still a final exam, and it counts as two grades. You are hoping to earn a C in the course. This will occur if the average of your six exam grades is greater than or equal to 70 and less than 80. What range of grades on the final exam will result in earning a C?

• A) [52, 82)
• B) [52, 82]
• C) [34, 84]
• D) [34, 84)

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Definitions:

Organogenesis

The phase of embryonic development during which the organs of the body are formed from the three primary germ layers.

Prenatal Development

The sequence of expansion and advancement in the womb starting at fertilization and concluding at childbirth.

First Trimester

The initial three months of pregnancy, a critical period for fetal development.

Life-Support System

Technology or equipment designed to maintain human life under critical conditions by providing necessary conditions or vital functions.