Factor out the GCF from the polynomial.75x + 15
A. 15(5x)
B. 15(5x + 1)
C. 5(15x + 3)
D. 3(25x + 5)
Answer: B
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Evaluate.(15a + b)0
A. 1 B. 15a + b C. 0 D. -1
Explain the mistake, then work the problem correctly.(4x3 - 2x2 + 5x - 1) - (8x3 - 7x2 - 2x + 4)= (4x3 - 2x2 + 5x - 1) + (-8x3 + 7x2 - 2x + 4)= -4x3 + 5x2 + 3x + 3
What will be an ideal response?
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 42 ? 45
A. 262,144 B. 16,777,216 C. 16,384 D. 1,048,576
Solve.A chemist needs 11 liters of a 50% salt solution. All she has available is a 20% salt solution and a 70% salt solution. How much of each of the two solutions should she mix to obtain her desired solution?
A. 3.3 liters of the 20% solution; 7.7 liters of the 70% solution B. 2.2 liters of the 20% solution; 8.8 liters of the 70% solution C. 4.4 liters of the 20% solution; 6.6 liters of the 70% solution D. 5.5 liters of the 20% solution; 5.5 liters of the 70% solution