Write the expression in the standard form a + bi.i21
A. -i
B. i
C. -1
D. 1
Answer: B
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Solve the problem.Employees of a publishing company received an increase in salary of 
plus a bonus of 
Let S(x) represent the new salary in terms of the previous salary x. Find the value of 
A. $15,900 B. $21,900 C. $13,558 D. $16,500
Solve the problem.A steel company produces two types of machine dies, part A and part B and is bound by the following constraints:? Part A requires 1 hour of casting time and 10 hours of firing time. ? Part B requires 4 hours of casting time and 3 hours of firing time.? The maximum number of hours per week available for casting and firing are 100 and 70, respectively.? The cost to the company is $0.75 per part A and $3.00 per part B. Total weekly costs cannot exceed $45.00.Let x = the number of part A produced in a week and 
number of part B produced in a week. Write a system of three inequalities that describes these constraints.
A. 
B. 
C. 
D. 
Solve the problem.At Allied Electronics, production has begun on the X-15 Computer Chip. The total cost function is given by 
and the total profit function is given by 
, where x represents the number of boxes of computer chips produced. The total revenue function, R(x), is such that 
. Find R(x).
A. R(x) = 39x - 0.6x2 B. R(x) = 40x + 0.3x2 C. R(x) = 40x - 0.3x2 D. R(x) = 42x - 0.3x2
?A travel agency will plan a tour for groups of size 53 or larger. If the group contains exactly 53 people, the price is $800 per person. However, each person's price is reduced by $10 for each additional person above the 53. If the travel agency incurs a price of $150 per person for the tour, what size group will give the agency the maximum profit?
A. ?6 B. ?91 C. ?59 D. ?70 E. ?32