Find the absolute value of the complex number . -1 -2i
a. 
b. 5
c. 
d. 
e. 
a.
Mathematics
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Determine the correct exponential function of the form f(x) = bx whose graph is given.P
A. f(x) = 
x
B. f(x) = 
x
C. f(x) = 
x
D. f(x) = 
x
Mathematics
Solve the system of equations by substitution, if a solution exists.
A. x = 1, y = 7 B. x = 0, y = 8 C. No solution D. x = -8, y = 0
Mathematics
Solve and, when appropriate, round the answer to the nearest tenth.A manufacturer's cost is given by C = 400 
+ 200, where C is the cost and n is the number of parts produced. How many parts are produced when the cost is $4600?
A. 121 B. 10,648 C. 4400 D. 1331
Mathematics
Solve the system of equations using matrices. Use Gaussian elimination with back-substitution. -5x - y + 6z=-29 -8x - 9z=-99 2y + z= 7
A. {(-9, 2, 18)} B. {(9, 2, 3)} C. {(-9, 18, 2)} D. {(9, 3, 2)}
Mathematics