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question
What is the additive inverse of the polynomial -9xy2 + 6x2y - 5x3?
9xy2 - 6x2y + 5x3
question
Which is true about the degree of the sum and difference of the polynomials 3x5y - 2x3y4 - 7xy3 and -8x5y + 2x3y4 + xy3?
The sum has a degree of 6, but the difference has a degree of 7.
question
Which is true about the completely simplified difference of the polynomials a3b + 9a2b2 β 4ab5 and a3b β 3a2b2 + ab5?
The difference is a binomial with a degree of 6.
question
Profit is the difference between revenue and cost. The revenue, in dollars, of a company that manufactures cell phones can be modeled by the polynomial 2x2 + 55x + 10. The cost, in dollars, of producing the cell phones can be modeled by 2x2 - 15x - 40. The variable x represents the number of cell phones sold.What expression represents the profit, and what is the profit if 240 cell phones are sold?
70x + 50; \$16, 850
question
Margot is sewing a ribbon on a seam along the perimeter of a square pillow. The side length of the pillow is 2x2 + 1 inches, and its perimeter is 4(2x2 + 1) inches. If x = 3.5, how much ribbon does she need?
102 in
question
What is true about the sum of the two polynomials? 6s2t - 2st2 4s2t - 3st2
The sum is a binomial with a degree of 3.
question
Pablo folds a straw into a triangle with side lengths of 4x2 - 3 inches, 4x2 - 2 inches, and 4x2 - 1 inches. The perimeter of the triangle is 12x2 - 6 inches. If x = 1.5, what was the length of the straw before it was folded?
21
question
Profit is the difference between revenue and cost. The revenue, in dollars, of a company that manufactures televisions can be modeled by the polynomial 3x2 + 180x. The cost, in dollars, of producing the televisions can be modeled by 3x2 - 160x + 300. The variable x is the number of televisions sold. If 150 televisions are sold, what is the profit?
\$50,700
question
The sum of two polynomials is 8d5 - 3c3d2 + 5c2d3 - 4cd4 + 9. If one addend is 2d5 - c3d2 + 8cd4 + 1, what is the other addend?
6d5 - 2c3d2 + 5c2d3 - 12cd4 + 8
question
What is the difference of the polynomials? (-2x3y2 + 4x2y3 - 3xy4) - (6x4y - 5x2y3 - y5)