Calculate and write the result as a decimal.124.23 × 1
+ 31.21 × 
A. 210.9725
B. 59.565
C. 69.8165
D. 214.8525
Answer: D
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Solve the problem.Rule: The sum of any two horizontally adjacent numbers is the number immediately below them. Use this rule to complete the array. 
A. 
B. 
C. 
D. 
Provide an appropriate response.In a raffle 1000 tickets are being sold at $1.00 each. The first prize is $100, and there are 3 second prizes fo $50 each. By how much does the price of a ticket exceed its expected value?
A. $1.00 B. $0.75 C. $1.75 D. $50
Solve the problem.An airline with two types of airplanes, P1 and P2, has contracted with a tour group to provide transportation for a minimum of 400 first class, 750 tourist class, and 1500 economy class passengers. For a certain trip, airplane P1 costs $10,000 to operate and can accommodate 20 first class, 50 tourist class, and 110 economy class passengers. Airplane P2 costs $8500 to operate and can accommodate 18 first class, 30 tourist class, and 44 economy class passengers. How many of each type of airplane should be used in order to minimize the operating cost?
A. 11 P1 planes and 7 P2 planes
B. 5 P1 planes and 17 P2 planes
C. 7 P1 planes and 11 P2 planes
D.
| 9 P1 planes and 13 P2 planes |
Determine the equation of variation.
A. y = 
B. y = 12x
C. y = 
D. y = -x + 13