Explain the mistake, then work the problem correctly.(5x3 - 4x2 + 5x - 1) + (6x3 - 5x2 - 2x + 4) = 11x3 + 9x2 + 3x + 3
What will be an ideal response?
Mistake: combining -4x2 with -5x2 does not equal 9x2
Correct: 11x3 - 9x2 + 3x + 3
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Find the domain and range of the relation.{(5, 5), (7, 8), (-7, 9), (-7, 6)}
A. Domain = {7, -7, 5, -17}; range = {8, 9, 5, 6} B. Domain = {8, 9, 5, 6}; range = {7, -7, 5} C. Domain = {7, -7, 5, 7}; range = {8, 9, 5, 6} D. Domain = {7, -7, 5}; range = {8, 9, 5, 6}
Solve the problem. Round amounts to the nearest cent and percents to the nearest tenth of a percent.Cost = $6.27; Selling price = $10.46. Find the markup and the rate of markup based on cost.
A. Markup: $4.19 Rate of markup based on cost: 40.1% B. Markup: $16.73 Rate of markup based on cost: 37.5% C. Markup: $4.19 Rate of markup based on cost: 66.8% D. Markup: $10.46 Rate of markup based on cost: 59.9%
Solve the equation by making an appropriate substitution.x - 4x1/2 - 32 = 0
A. {128} B. {48} C. {64} D. {32}
Solve the problem.The cost of manufacturing clocks is given by c = 25(n + 64)1/2, where c is the cost in dollars and n is the number produced. What is the cost when no clocks are produced?
A. $40 B. $1600 C. $200 D. $25