Write the power of i as i, -1, -i, or 1.i9
A. -i
B. 1
C. i
D. -1
Answer: C
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Find the length of the unknown side of a right triangle with legs a and b and hypotenuse c. Round to the nearest thousandth, if necessary.a = 6, c = 10
A. b = 8 B. b = 10 C. b = 9 D. b = 7
The function f is one-to-one. State the domain and the range of f and f-1. Write the domain and range in set-builder notation.f(x) = -4x + 5
A. f(x): D = {x|x > -4}, R = {y|y > 5}; f-1(x): D = {x|x < -4}, R = {y|y < 5} B. f(x): D is all real numbers, R = {y|y > 5}; f-1(x): D is all real numbers, R = {y|y < 5} C. f(x): D is all real numbers, R is all real numbers; f-1(x): D is all real numbers, R is all real numbers D. f(x): D = {x|x > -4}, R is all real numbers; f-1(x): D = {x|x < -4}, R is all real numbers
Solve the problem.The value of a stock is given by the function 
where V is the value of the stock after time t, in months. When will the value of the stock be 
?
A. 1.3 months B. 0.5 months C. 0.8 months D. 2.3 months
Solve the problem.Sarah missed 65 points, out of 542 points possible, in Math 120. An A is given to students who have a course average of at least 90%. Bob tells his friend that he has earned a grade of A in the course. Is he correct?
A. No B. Yes