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For grade credit, submit over the internet by 11:59 PM (= 23:59 hours) on Sunday 17 September 2017
Math 76O-250 Calculus for Business
Self-marking Practice quiz 1
Submit over the internet by 11:59 PM (= 23:59 hours) on Sunday 17 September 2017
Maximum value toward semester grade is 2 pts
Methods will be discussed in class;
CAUTION: Prof McFarland makes new tests each semester.
|Average grade on Spring 2017 paper test #1 : 7.35 [perfect = 10 ]|
|(a)(1 point) Find f(50) if f(x) =||
|: f(x) =|
|(b)(1 point) For the function f(x) named in problem [1a] above, find x if f(x) = 150.|
(c)(3 points) Motorola sells 4000 radios (per month) today for $5 apiece. For
each $1 increase in this price, Motorola will sell 400 fewer radios. Enter
integers (such as 100, -20, or 23) in the boxes below expressing the number
N of radios sold in terms of their selling price x
Scoring : 1 pt if only one number is correct number below.
|N = x +|
(2 pts) Name the two x-intercepts and the one y-intercept
of the graph of the equation y = (x - 1)(x + 2)
Scoring : y-intercept worth 1 pt ; both x-intercepts must be correct for the 2nd point below
|My first x-intercept is:|
|My second x-intercept is:|
|My one y-intercept is:|
|V = x3 + x2 + x|
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