Solve using matrices.5x - 2y = -1 x + 4y = 35
A. (3, 9)
B. (2, 9)
C. (2, 8)
D. (3, 8)
Answer: D
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Convert the numeral to the requested form.Some enumeration systems in the past were repetitive. If you want to represent three of something, you repeat the symbol for 1 three times. If you want to represent 30 things, you write the symbol for 10 three times, and so on. In ancient Egypt, the symbol for 1 was 
and the symbol for 10 was 
. How would you write the numeral for 75 in the Egyptian system?
A. 
B. 
C. 
D. 
Solve the equation.- 
= -9
A. {12} B. {-27} C. {-12} D. {27}
Solve the following quadratic application using the given graph. An arrow is fired into the air with an initial velocity of 160 feet per second. The formula 
models the arrow's height above the ground, y, in feet, x seconds after it was shot into the air. 
(i) When does the arrow reach its maximum height? (ii) What is the maximum height? (iii) Write the vertex as an ordered pair. (iii) Write the vertex as an ordered pair. (iv) Write the x-intercepts as ordered pairs. What are the real-world meanings of the intercepts?
A. (i) The arrow reaches its maximum height 6 seconds after it is fired into the air. (ii) The maximum height of the arrow is 720 feet. (iii) Vertex: (6, 720) (iv) x-intercepts: (0, 0) and (0, -20); The arrow is on the ground 0 seconds after being fired and -20 seconds after being fired. B. (i) The arrow reaches its maximum height 5 seconds after it is fired into the air. (ii) The maximum height of the arrow is 400 feet. (iii) Vertex: (5, 400) (iv) x-intercepts: (0, 0) and (0, 10); The arrow is on the ground 0 seconds after being fired and 10 seconds after being fired. C. (i) The arrow reaches its maximum height 6 seconds after it is fired into the air. (ii) The maximum height of the arrow is 1200 feet. (iii) Vertex: (6, 1200) (iv) x-intercepts: (0, 0) and (0, 9.69); The arrow is on the ground 0 seconds after being fired and 9.69 seconds after being fired. D. (i) The arrow reaches its maximum height 5 seconds after it is fired into the air. (ii) The maximum height of the arrow is 80 feet. (iii) Vertex: (5, 80) (iv) x-intercepts: (0, 0) and (0, -10); The arrow is on the ground 0 seconds after being fired and -10 seconds after being fired.
Find the amount of sales tax or excise tax. Round to the nearest cent.Sales price: $30,082Sales tax rate: 5.25%
A. $15,793.10 B. $1579.31 C. $1880.13 D. $1278.49