Use the five-step strategy for solving word problems to find the number or numbers described in the following exercise.When 60% of a number is added to the number, the result is 64. What is the number?
A. 160
B. 40
C. 24
D. 38
Answer: B
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Find the length of the unknown side of the right triangle. In each case, a and b represent the lengths of the legs and c represents the length of the hypotenuse.
a = 
, b = 
; find c
A. 25
B. 5
C. 
D. 533
Decide whether the statement is an example of the commutative, associative, identity, inverse, or distributive property.8 + 5 = 5 + 8
A. Associative B. Identity C. Commutative D. Distributive
Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of feasible points. 
Objective Function: z = x + 6y + 5Find minimum.
A. minimum: 27 B. minimum: 37 C. minimum: 21 D. no minimum
Solve the equation using an integrating factor.
, t > 0
A. y = x3 + C B. y = x3 + Cx-3 C. y = Cx3 + x-3 D. y = Cx-3