Write the algebraic expression described.The sum of the angles of a triangle is 180°. If one angle of a triangle measures x° and a second angle measures 
, express the measure of the third angle in terms of x.
A. (201 - 10x)°
B. (159 - 10x)°
C. (159 + 10x)°
D. (159 - 9x)°
Answer: B
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Provide an appropriate response.Suppose a machine costing $12,000 is to be replaced at the end of 7 years, at which time it will have a salvage value of $6000. In order to provide money at that time for a new machine costing $15,000, a sinking fund is set up into which equal payments are placed at the end of every quarter. If the fund earns 5.6% compounded quarterly, what should each payment be?
Fill in the blank(s) with the appropriate word(s).
Express the statement as an equation involving the indicated variables.The circumference C of a circle is the product of ? and its diameter d.
A. C = ?d
B. C = 2?d
C. C = 
D. C = ? + d
Solve the exponential equation below, and give the exact value for x.
?
?
A. 
B. 
C. 
D. 
E. 
Find the fifth term and the nth term of the geometric sequence whose initial term, a, and common ratio, r, are given.a = -6; r = -3
A. a5 = 162; an = -6 ? (-3)n-1 B. a5 = 162; an = -6 ? (-3)n C. a5 = -486; an = -6 ? (-3)n-1 D. a5 = -486; an = -6 ? (-3)n