Establish the identity.csc u - sin u = cos u cot u
What will be an ideal response?
csc u - sin u = 
- sin u = 
= 
= cos u ? 
= cos u cot u
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Solve the problem.Allied Radio is a company which makes clock radios. The following table gives the profit, y, in dollars that this company made during the three stated years, x.
This set of data can be modeled by f(x) = ax2 + bx + c, where x represents the year. Find a linear system for which the solution represents the values of a, b, and c. Use technology to solve this system. Then, using the quadratic equation, predict the profit that Allied Radio made in the year 1994. Round your answer to the nearest hundred dollars.
A. $837,500 B. $836,400 C. $836,800 D. $837,100
Find functions f and g so that f ? g = H.H(x) = 
A. f(x) = 
- 9; g(x) = 
B. f(x) = 
; g(x) = 
- 9
C. f(x) = x2 - 2; g(x) = 
D. f(x) = 
, g(x) = x2 - 2
Tell whether the expression is a monomial. If it is, name the variable(s) and coefficient, and give the degree of the monomial.12x-4
A. Monomial; variable x; coefficient 12; degree -4 B. Monomial; variable x; coefficient 12; degree 4 C. Monomial; variable x; coefficient 4; degree 12 D. Not a monomial
The manufacturer of GRIPPER tires modeled its return to sales from television advertising expenditures in two regions, as follows:
Region1: 
Region2: 
where 
and 
are the sales revenue in millions of dollars, and 
and 
are millions of dollars of expenditures for television advertising. How much money will be needed to maximize sales revenue in both districts? Round your answer to the nearest million dollars.
A. $14 million
B. $39 million
C. $25 million
D. $18 million
E. $19 million