Write the Sentence as an Equation

question 137

Multiple Choice

Write the sentence as an equation. Let the variable x represent the number.
-The formula S = P - 0.2P gives the sale price, S, of a shirt that was marked down 20% from the original price, P. Find the sale price of a shirt that originally cost $42.

• A) $44.00
• B) $33.60
• C) $41.80
• D) $50.40

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Definitions:

Independent Events

Two or more events where the occurrence of one does not affect the probability of the others occurring.

Conditional Probability

The probability of an event given that another event already occurred. The conditional probability of A given B is P(A ∣ B) = P(A ∩ B)/P(B).

P(B | A)

The probability of event B occurring given that event A has already occurred, a concept in conditional probability.

P(A ∪ B)

The probability of the occurrence of at least one of two events, A or B, including the case where both events occur simultaneously.