Algebra test

May 28th, 2015
Studypool Tutor
Price: $10 USD

Tutor description

1. A company’s costs, in millions of dollars, are given by the equation, C = x2 – 3x – 27, where x is the number of items sold, in thousands. What are the costs when 1,000 items are sold? 1,500 items? (Hint: If the number of items sold

Word Count: 751
Showing Page: 1/3
1. A company's costs, in millions of dollars, are given by the equation, C = x2 - 3x - 27, where x is the number of items sold, in thousands. What are the costs when 1,000 items are sold? 1,500 items?(Hint: If the number of items sold is 1000, then x=1.)a) If x = 1,000, simply substitutex = - 3(1) - 27x = 1 - 3 - 27x = -29b) If x = 1,500x = - 3(1.5) - 27x = 2.25 - 4.5 - 27x = -29.252. A company's costs, in millions of dollars, are given by the equation, C = x2 - 3x - 27, where x is the number of items sold, in thousands. How many items must be sold for the costs to be zero?Cost should be zero, c = 0, hence - 3x - 27 = 0x = (-3 +/- sqrt( - (4*-27)))/2x = (-3 +/- sqrt(117)) /2x = (-3 + 10.8166)/2 or (-3 -10.8166)/2x = -3.908 or 6.9083. An object's height, in meters, when thrown vertically from the ground at a velocity of 80 m/s is given by the equation H = -

Review from student

Studypool Student
" This tutor is great! "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1829 tutors are online

Brown University





1271 Tutors

California Institute of Technology




2131 Tutors

Carnegie Mellon University




982 Tutors

Columbia University





1256 Tutors

Dartmouth University





2113 Tutors

Emory University





2279 Tutors

Harvard University





599 Tutors

Massachusetts Institute of Technology



2319 Tutors

New York University





1645 Tutors

Notre Dam University





1911 Tutors

Oklahoma University





2122 Tutors

Pennsylvania State University





932 Tutors

Princeton University





1211 Tutors

Stanford University





983 Tutors

University of California





1282 Tutors

Oxford University





123 Tutors

Yale University





2325 Tutors