Solve the problem.During the first five months of the year, Len earned commissions of $2,620, $2,070, $3,510, $2,360, and $3,470. If Len must have average monthly earnings of at least $2,910 in order to qualify for retirement benefits, what must he earn in the sixth month in order to qualify for benefits?
A. at least $2,910
B. at least $3,430
C. at least $2,823
D. at least $2,806
Answer: B
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Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 - 16x + 15 = 0
A. x2 + (y - 8)2 = 49 center (0, 8), r = 7 B. (x - 8)2 + y2 = 49 center (-8, 0), r = 7 C. (x + 8)2 + y2 = 49 center (-8, 0), r = 7 D. (x - 8)2 + y2 = 49 center (8, 0), r = 7
Solve the problem.A sequence of yearly payments of $2000 is invested at the end of every compounding period, where interest is compounded semi-annually at 2%. What is the total amount of the annuity at the end of 6 years?
A. $125,365.01 B. $25,365.01 C. $138,047.51 D. $53,648.36
Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 + 2x + 6y + 1 = 0 
A. (h, k) = (-1, 3); r = 3
B. (h, k) = (1, -3); r = 3
C. (h, k) = (1, 3); r = 3
D. (h, k) = (-1, -3); r = 3
Write an equation for the line described. Give your answer in slope-intercept form.m = -5, through (-5, 6)
A. 5x +y = 19 B. y = 5x - 17 C. y = -5x + 26 D. y = -5x - 19