3. Which of the following polynomial is written in standard form? A. a3-5a4 + 7 a2 + 3as 4
C. 5x3 - 4x2 + 3x7 + 2x+ - 1
B. 3a* - a3 + 7a2 + 6a + 2
D. 12y3 – 10y3 + 8y3 + 6y3

4. How many terms does the following sum have when (4x' -- 3x2 + 10x - 4) + ( 4x' + x3 + 2x)
is written in standard form?
A. 3
B. 1
C. 5
D. 7

5. which value of ( a ) makes (9x - 1)² = ax² - 18x + 1 true ?
A. 9
B. 18
C. 64
D. 81
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45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅