Tom's telephone company charges a flat fee of $33.00 a month, plus $0.10 a minute for all long-distance calls made during the mo
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Answer:
Step-by-step explanation:
Quadratic Formula:
√-1 is imaginary number i
Step 1: Define
y = -3x² + 4.5x - 20
a = -3
b = 4.5
c = -20
Step 2: Substitute and Evaluate