Solve.
- 4 = 
A. 28
B. 32
C. 56
D. 224
Answer: D
Mathematics
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Evaluate the given expression.243-0.4 + 360.5
A. 
B. 
C. 15
D. 
Mathematics
Find z1z2. Write the answer in polar form with the argument between 0° and 360°.z1 = 5(cos 35° + i sin 35°), z2 = 2(cos 40° + i sin 40°)
A. 10(cos 75° + i sin 75°) B. 10(cos 50.9° + i sin 50.9°) C. 7(cos 75° + i sin 75°) D. 7(cos 50.9° + i sin 50.9°)
Mathematics
Write the first five terms of the geometric sequence.a1 = 128, r = 
A. 64, 32, 16, 8, 4 B. 4, 8, 16, 32, 64 C. 128, 64, 32, 16, 8 D. 8, 16, 32, 64, 128
Mathematics
Determine where the function is concave downward.
?
?
A. 
B. ?
C. ?
D. ?
Mathematics