Solve.A cyclist bikes at a constant speed for 20 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 25 miles. Find his speed.
A. 5 mph
B. 4 mph
C. 7 mph
D. 6 mph
Answer: A
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Solve the problem.Write an iterated triple integral in the order 
for the volume of the rectangular solid in the first octant bounded by the planes 
, 
, and 
.
A. 
B. 
C. 
D. 
Perform the division.
?
?
A. 3 - 29x B. 3x - 3 C. 3x - 29 D. 3x2 - 29
Secret messages can be encoded by using a code and an encoding matrix. If we have the code:
and an encoding matrix E, we can encode a message by taking every two letters of the message, converting them to their corresponding numbers, creating a 2 × 1 matrix, and then multiplying each two numbers by E. The message may be unscrambled with a decoding matrix which is the inverse of the coding matrix, E-1. Determine if the given pair of encoding matrices are inverses of each
other.
and 
What will be an ideal response?
Solve the problem.A room has a floor area of 304 square feet. One dimension is 3 feet more than the other. Find the dimensions of the room.
A. 19 feet, 22 feet B. 13 feet, 16 feet C. 16 feet, 19 feet D. 17 feet, 20 feet