Every Saturday, Maria and Alicia take a bag of aluminum cans they collected during the week to the recycling center. The points
graphed below show the amounts of money Maria and Alicia received for their last four bags of cans. Cans Graph What rate did the recycling center pay for a pound of aluminum cans? Group of answer choices A$0.49 B $0.45 C$2.22 D.$3.25
2 answers:
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Answer: 25x² - 64
<u>Step-by-step explanation:</u>
(5x + 8)(5x - 8)
= 5x(5x - 8) + 8(5x - 8)
= 25x² - 40x + 40x - 64
= 25x² + 0x - 64
=
NOTE: descending powers means the biggest exponent goes first, then the next biggest exponent, etc.
For example: x⁴ then x³ then x² then x then the number (which is actually x⁰)