Use a product-to-sum identity to rewrite the expression.sin(12s - 2) sin (6s - 5)
A. 0.5(cos(6s - 7) - cos(18s - 3))
B. 0.5(cos(6s + 3) - cos(18s - 7))
C. 0.5(cos(6s + 3) + cos(18s - 7))
D. 0.5(sin(6s + 3) - sin(18s - 7))
Answer: B
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Solve the problem.Jim has gotten scores of 61 and 82 on his first two tests. What score must he get on his third test to keep an average of 80 or greater?
A. At least 71.5 B. At least 74.3 C. At least 97 D. At least 96
Perform the division.
A. x2 - 25 B. x2 - 25x + 5 C. x2 + 5x + 5 D. x2 + 25
Suppose that an automobile manufacturer has accepted orders for 30 minivans, 25 sport utility vehicles, and 15 sedans. These orders can be represented by the row vector Q = [ 30 25 15 ].The "raw materials" that go into each type of vehicle are steel, glass, plastic, paint, and labor. The entries in matrix R below give the number of units of each raw material (in this order) which are needed for each type of vehicle. R = 
. Suppose that steel costs $800 per unit, glass costs $400 per unit, plastic costs $300 per unit, paint costs $200 per unit, and labor costs $1000 per
unit. This data can be written as the column cost vector C = 
. The price the manufacturer negotiated for each minivan is $16,000, for each SUV is $21,000, and for each sedan is $13,000. This information can be written as the column price vector P = 
.Use the matrix operations on a graphing calculator to find the cost of each type of vehicle.
What will be an ideal response?
Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form.(0, 4); m = 
A. y = 
x - 4
B. y = 
x + 4
C. y = 
x + 
D. y = 
x + 4