Answer:
C. -7x⁸ + 5x⁷ - 11x + 2
Step-by-step explanation:
5x⁷ - 8x + 2 - (7x⁸ + 3x)
= -7x⁸ + 5x⁷ - 8x - 3x + 2
= -7x⁸ + 5x⁷ - 11x + 2
|-5|, -3, -1, |2|, 6 (I’m not 100% sure, but I think this should be correct)
Answer:
B
Step-by-step explanation:
A)
Let X be the food expenditure of a family.
Let the population mean of an expenditure of a family be.
Let the population standard deviation of an expenditure of a family be.
The proportion families spend more than $30 but less than $490 per month on food is,
