Use identities to write the expression as a function of x alone.cos (x - 270°)
A. cos x
B. -sin x
C. sin x
D. -cos x
Answer: B
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Provide an appropriate response.Find the equation of the line perpendicular to y - x + 2 = 0 and passing through the point 
Solve the equation for y.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.Find the surface area of a box with length 1.3 in, width 2.1 in, and height 3.3 in.
A. 27.9 ft2 B. 18.018 ft2 C. 9.009 ft2 D. 13.95 ft2
Use a calculator to help solve the equation. Round approximate answers to three places.(1.64 × 104) x + 5.4 × 103 = 8.7 × 102
A. {0.498} B. {0.382} C. {-0.276} D. {-0.498}
Provide an appropriate response.A test is composed of 4 multiple choice problems and 8 questions that can be answered true or false. Each multiple choice problem has 4 choices. How many different response sheets are possible if only one choice is marked for each question?
What will be an ideal response?