Simplify the expression.-18 + 8 - 9
A. 19
B. -19
C. -1
D. -17
Answer: B
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Solve the right triangle. If two sides are given, give angles in degrees and minutes.
B = 58.45°, a = 558.4 mGive side lengths to two decimal places.
A. A = 31.55°; b = 909.44 m; c = 1,067.19 m B. A = 31.55°; b = 853.60 m; c = 1,067.19 m C. A = 31.55°; b = 965.28 m; c = 1,053.62 m D. A = 31.55°; b = 909.44 m; c = 1,079.84 m
Solve the initial value problem.Differential Equation: 
= (4 sec 4t tan 4t) i + 
j + t2kInitial Condition: r(0) = 3i + 
j - 3k
A. r(t) = (csc 4t + 2)i + 
j + 
k
B. r(t) = (sec 4t + 2)i + 
j + 
k
C. r(t) = (sec 4t + 2)i - 
j + 
k
D. r(t) = (csc 4t + 2)i + 
j + (t3 - 3)k
Find a simplified form of f(x). Assume that x can be any real number.f(x) = 
A. f(x) = 81?(x + 4)2?
B. f(x) = ?x + 4?
C. f(x) = 9?x + 4?
D. f(x) = 9(x + 4)
Solve the problem.A bike road race starts at an elevation of 930 feet and passes through 5 stages where the elevation changes by 356 feet, 160 feet, 597 feet, 184 feet, and -276 feet. At what elevation does the race end?
A. 2503 feet B. 1951 feet C. 322 feet D. -2503 feet