The US Postal rates for a first class letter are $0.46 for up to and including 1 ounce $0.66 for 1 to 2 including 2 ounces $0.86
1 answer:
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Answer:
6 + 3 or 6 - 3
Step-by-step explanation:
x^2 - 12x + 36 = 90
x^2 - 12x - 54 = 0
x =
a = 1, b= -12, c= -54
6 + 3 or 6 - 3