Expand the number to its natural form.2.53 × 105
A. 2,530,000
B. 253,000
C. 25,300,000
D. 25,300
Answer: B
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If the Babylonian numeral 
stands for one and the Babylonian numeral 
stands for ten, then write the Babylonian numeral as a Hindu-Arabic numeral.
A. 18 B. 11,523 C. 1083 D. 903
Provide an appropriate response.Simplify: (3 + 7i) - (2 + i)
Fill in the blank(s) with the appropriate word(s).
Solve the problem.A person standing close to the edge on top of a 64-foot building throws a baseball vertically upward. The quadratic function 
models the ball's height above the ground, s(t), in feet, t seconds after it was thrown. After how many seconds does the ball reach its maximum height? Round to the nearest tenth of a second if necessary.
A. 1.5 seconds B. 2 seconds C. 128 seconds D. 4.8 seconds
Solve the system by any method.0.5x - 0.1y = -0.2-0.1x - 0.1y = 0.4
A. {(2.3, 1.5)} B. {(-1, -3)} C. ? D. {(-1.6, -0.7)}