Solve the problem.A retailer knows that n games can be sold in a month if the price is 
dollars per game. If he buys each game for $10, and if he wishes to make a profit of at least 
per month on sales of this game, how many games must he sell each month?
A. 15 ? n ? 25
B. 15 ? n ? 20
C. 20 ? n ? 30
D. 20 ? n ? 50
Answer: C
Mathematics
You might also like to view...
Find first four terms of the indicated expansion by use of the binomial series.(1 - 3
)7
A. 1 - 21
+ 63x - 105x
+ . . .
B. 1 - 21
+ 189x - 945x2 + . . .
C. 1 + 21
- 189x + 945x
- . . .
D. 1 - 21
+ 189x - 945x
+ . . .
Mathematics
Decide whether or not the given equation is an identity.2 sin2 
- cos ? = 1
A. Yes B. No
Mathematics
Solve the equation.
x+1= 
x-1
A. 
B. 
C. 
D. 
Mathematics
Write a formula for a linear function f whose graph satisfies the conditions.Slope: - 
; y-intercept: 8
A. f(x) = - 
x - 8
B. f(x) = - 
x + 8
C. f(x) = 
x - 8
D. f(x) = 
x + 8
Mathematics