Final Answer:
D) 29
Substituting the value of 8 for x in the expression 2x - 19, the result for PR is 29.
Step-by-step explanation:
The value of PR is found by substituting the given value of 8 for x into the expression 2x - 19. Therefore, PR = 2(8) - 19, simplifying to 16 - 19, resulting in a final answer of 29.
To explain further, the expression 2x - 19 represents a mathematical relationship where x is a variable. In this case, x is replaced by 8, as per the given information. By performing the multiplication and subtraction, we arrive at the value of 29 for PR.
Understanding how to substitute values into algebraic expressions is a fundamental skill in mathematics. This process allows us to evaluate expressions and find specific values within a given mathematical context.