The above information is from your computer : be sure it is correct. For grade credit, submit over the internet by 11:59 PM (= 23:59 hours) on Sunday 16 September 2018 
Math 76O250 Calculus for Business
Selfmarking Practice quiz 1
Submit over the internet by 11:59 PM (= 23:59 hours) on Sunday 16 September 2018
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 Fall 2017 paper test #1 : 6.68 [perfect = 10 ] 
[1](a)(1 point) Find f(50) if f(x) = 

: f(x) = 

[1](b)(1 point) For the function f(x) named in problem [1a] above, find x if f(x) = 150.  
x =  
[1](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](a) 
(2 pts) Name the two xintercepts and the one yintercept
of the graph of the equation y = (x  1)(x + 2) Scoring : yintercept worth 1 pt ; both xintercepts must be correct for the 2nd point below 
My first xintercept is:  
My second xintercept is:  
My one yintercept is: 


V = x^{3} + x^{2} + x 
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