Evaluate the expression by first changing the form. Verify the answer by use of a calculator. sin 
cos 
- cos 
sin 
A. 
B. 
C. 1
D. 
Answer: D
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Solve.A report showed that the net profit of a business for one month was $27,753. This was a decrease of 13% from the previous month. What was the previous month's profit?
A. $23,606 B. $31,900 C. $88,532.07 D. $36,047
Let 
. Sketch the region R under the graph of f on the interval [0, 4], and use a Riemann sum with four subintervals of equal length 
to approximate the area of R. Choose the
representative points to be the right endpoints of the subintervals.
?
A. ?
Area approximation with a Riemann sum with four subintervals is 28 sq units.
?
B. ?
Area approximation with a Riemann sum with four subintervals is 36 sq units.
?
C. ?
Area approximation with a Riemann sum with four subintervals is 32 sq units.
?
D. ?
Area approximation with a Riemann sum with four subintervals is 40 sq units.
?
Change the word statement to an equation. Use x as the variable.
of a number plus 2 equals 15.
A. 
x = 2 + 15
B. 
(x + 2) = 15
C. 
x + 2 = 15
Find the real zeros of the function. List the x-intercepts of the graph of the function.P(x) = (4x - 7)2 - 6(4x - 7) + 8
A. x = - 
, x = - 
B. x = 
, x = 
C. x = 
, x = - 
D. x = - 
, x = 