Simplify.3(3.9x + 4) + 4(x + 2.6)
A. 15.7x + 22.4
B. 34.1x
C. 15.7x + 6.6
D. 23.7x + 22.4
Answer: A
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Solve and graph. Write the solution in interval notation.3
+ 7 > 23
A. (-?, - 
) ? (
, ?)
B. (-?, - 
) ? (
, ?)
C. (
, ?) 
D. (
, ?)
Solve the problem.Suppose that a hair dryer operates on a voltage that can be represented by the relation 
and that it draws a current represented by the relation 
where t is time measured in seconds. The power consumed by the appliance is P = VI. Graph the power in 
by 
and use an identity to write the expression for the power in
the form 
where a, k, and d are constants.
A. P = 640 cos(240?t) + 640
[0, 0.04, 0.01] by [-200, 2000, 200]
B. P = -640 cos(240?t) + 640
[0, 0.04, 0.01] by [-200, 2000, 200]
C. P = 640 cos(120?t) + 640
[0, 0.04, 0.01] by [-200, 2000, 200]
D. P = 1280 cos(240?t) + 1280
[0, 0.04, 0.01] by [-200, 2000, 200]
Factor.24x3y + 66x2y + 45xy
A. 3xy(4x + 1)(2x + 15) B. 3xy(4x + 5)(2x + 3) C. 3y(4x + 1)(2x + 15) D. 3xy(15x + 5)(x + 3)
Translate the following into an inequality statement.x is greater than or equal to -5 and less than 6.
A. -5 < x ? 6 B. -6 < x ? 5 C. -5 ? x < 6 D. 6 ? x < -5