Answer:
(c) 329 miles
Explanation:
You want to evaluate the expression 5w² -4y²/z³ -56 for (w, y, z) = (9, 25, 5).
Evaluation
Put the values where the corresponding variables are and do the arithmetic.
diameter = 5(9²) -4(25)²/(5)³ -56
diameter = 5(81) -4(625)/125 -56 = 405 -20 -56
diameter = 329 . . . . miles
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