Find the domain of f.f(x) = 
A. {x | x ? -7}
B. {x | x ? 7}
C. All real numbers
D. {x | x ? ±2}
Answer: C
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Translate the problem to a system of equations, then solve using Cramer's Rule.Jerry has 3 pieces of string. The total length is 82 inches. The sum of the two longer pieces is 70. The middle piece is twice as long as the shortest piece. What are the lengths of the 3 pieces?
A. 6, 12, and 64 inches B. 12, 24, and 46 inches C. 12, 46, and 56 inches D. No solution
Provide an appropriate response.A rocket is 32 feet from a satellite when it begins accelerating away from the satellite at a constant rate of 12 feet per second per second. The distance, in feet, between the rocket and the satellite is given by the function 
where t is the number of seconds since the rocket started accelerating. Find and interpret P(4). Distance Between Rocket and Satellite
A. 96; after 4 seconds, the distance between the rocket and the satellite is 96 feet. B. 56; after 56 seconds, the distance between the rocket and the satellite is 4 feet. C. 48; after 48 seconds, the distance between the rocket and the satellite is 4 feet. D. 128; after 4 seconds, the distance between the rocket and the satellite is 128 feet.
Provide an appropriate response.Solve the proportion: 
= 
A. 10 B. 0.22 C. 4.5 D. 18
Determine if the proportion is true or false.
= 
A. False B. True