Solve.On a map, the length of a nature-center trail is 9.0 cm. If 1 cm on the map represents 44 km, what is the actual length of the trail? Round your answer to the nearest tenth, if necessary.
A. 396 km
B. 397 km
C. 792 km
D. 400 km
Answer: A
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Write the complex number in polar form.-3
+ 3j
A. 6(cos(-135°) + j sin(-135°)) B. 6(cos(-45°) + j sin(-45°)) C. 6(cos 135° + j sin 135°) D. 6(cos 45° + j sin 45°)
Sketch the graph of the function and find the domain and range.f(x) = x2 + 1
A. domain: all real numbers
range: y ? -1
B. domain: all real numbers
range: y ? 1
C. domain: all real numbers
range: y ? 1
D. domain: all real numbers
range: y ? 0
Solve the problem.The formula y = 
models the average cost per unit, y, for Electrostuff to manufacture x units of Electrogadget IV. How many units must the company produce to have an average cost per unit of $410?
A. 147 units B. 127 units C. 149 units D. 116 units
Solve.V = 7s3, for s3
A. s3 = 7V
B. s3 = 
C. s3 = V - 7
D. s3 = 