Solve.The weight W of an object on the Moon varies directly as the weight E on earth. A person who weighs 119 lb on earth weighs 23.8 lb on the Moon. How much would a 193-lb person weigh on the Moon?
A. 335.8 lb
B. 0.2 lb
C. 38.6 lb
D. 965 lb
Answer: C
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Solve the problem.A job pays a salary of 35,000 the first year. During the next 10 years, the salary increases by 3% each year. What is the salary for the 11th year? What is the total salary over the 11-year period? (Round to the nearest cent.)
A. $47,037.07; $401,235.78 B. $47,037.07; $448,272.85 C. $48,448.19; $401,269.11 D. $48,448.19; $496,721.03
Solve the problem.The seats in the lecture hall are arranged in 21 rows with 6 seats in each row. Find how many seats are in this room.
A. 126 seats B. 136 seats C. 120 seats D. 132 seats
Solve using matrices. x + y + z = -4 x - y + 2z = 02x + y + z = -3
A. (-2, 1, -3) B. (1, -3, -2) C. (-3, -2, 1) D. (-2, -3, 1)
Find the value of the expression using the given values.
?x = 7, y = 5
A. 
B. 
C. 
D. 1