B is incorrect which means it is the answer
Answer:
you would have to make 100s on at least 5 tests or assignments
Step-by-step explanation:
(Distribute the minus sign of the subtrahend in each term.)
= 8r⁶s³ – 9r⁵s⁴ + 3r⁴s⁵ – 2r⁴s⁵ + 5r³s⁶ + 4r⁵s⁴
(Add or subtract like terms.)
= 8r⁶s³ – 5r⁵s⁴ + r⁴s⁵ + 5r³s⁶
(If you want to factor out, then...)
= r³s³ (8r³ – 5r²s + rs² + 5s³)
Use the equation(s)
392 x 20% OR 392 x 0.20
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392 x 20% = 78.4
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78.4 is your answer
