Find the interval(s) for b such that the following equation has at least one real solution
?
.
?
A. 
B. 
C. 
D. 
E. 
Answer: A
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Solve the problem.If f(x) = 
, g(x) = 
, and h(x) = 5x+ 20, find f(g(h(x))).
A. 
+ 4
B. 
C. 
D. 5
+ 20
Solve. Write a mixed numeral for the answer.Ellen is knitting a scarf with one 2
-inch blue stripe, one 1
-inch green stripe, and one 2
-inch white stripe. How wide is the scarf?
A. 
in.
B. 
in.
C. 6
in.
D. 1
in.
Solve the problem.In an analysis of traffic, a certain city estimates the traffic flow as illustrated in the figure below, where the arrows indicate the flow of traffic. If x1 represents the number of cars traveling from intersection A to intersection B, x2 represents the number of cars traveling from intersection B to intersection C, and so on, we can formulate equations based on the principle that the number of vehicles entering the intersection equals the number leaving it. Formulate an equation for the traffic at each of the four intersections. 
A. x1 - x4 = 450 x1 - x2 = 650 x2 - x3 = 1400 x3 - x4 = -1100 B. x1 - x4 = -450 x1 - x2 = -650 x2 - x3 = -1400 x3 - x4 = 1100 C. x1 - x4 = -650 x1 - x2 = -450 x2 - x3 = 1400 x3 - x4 = -1100 D. x1 - x4 = 450 x1 - x2 = 650 x2 - x3 = 1400 x3 - x4 = 1100
Solve the problem.A store is discounting all regularly priced items by 30%. (i) Find a function f that computes the sale price of an item having a regular price of x. (ii) Find the regular price of an item that costs $78.46 on sale.
A. f(x) = 0.3 + x; $78.16 B. f(x) = 0.3x; $261.53 C. f(x) = x - 0.3x; $112.09 D. f(x) = x - 0.3; $78.76