Solve the problem.In how many ways can 7 people each have different birth months?
A. 84
B. 3,991,680
C. 792
D. 35,831,808
Answer: B
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Solve the system using Gaussian elimination.-5x - y - 5z = -68-8x + 4y + 6z = 34-7x - 9y + z = -46
A. {(4, 3, 9)} B. {(-4, 3, 8)} C. {(4, 9, 3)} D. ?
Solve the problem.The long jump record, in feet, at a particular school can be modeled by 
where x is the number of years since records began to be kept at the school. What is the record for the long jump 
after record started being kept? Round your answer to the nearest tenth.
A. 21.4 ft B. 26.0 ft C. 26.1 ft D. 25.9 ft
Write the ratio as a fraction in simplest form.15 : 40
A. 
B. 
C. 
D. 
Solve the problem.In a chemistry class, 6 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 4.0 L B. 2.0 L C. 6.0 L D. 3.0 L