Write the function using function notation. Let x be the independent variable and y be the dependent variable. Use the letter f to name the function.y = 
A. f(x) = 2x
B. y = 
C. f(x) = 
D. f(x) = x
Answer: C
Mathematics
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Solve.Tom Quig traveled 210 miles east of St. Louis. For most of the trip he averaged 60 mph, but for one period of time he was slowed to 10 mph due to a major accident. If the total time of travel was 6 hours, how many miles did he drive at the reduced speed?
A. 50 mi B. 40 mi C. 30 mi D. 25 mi
Mathematics
Evaluate the expression.(-4)-1
A. -4
B. - 
C. 
D. 4
Mathematics
Describe the figure as completely as possible, using the properties simple, closed, polygonal curve, and polygon.
A. Polygon B. Polygonal curve C. Simple, not closed D. Closed
Mathematics
Find the axis of symmetry of the parabola defined by the given quadratic function.f(x) = (x + 4)2 + 9
A. y = 9 B. y = -9 C. x = -4 D. x = 4
Mathematics