State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.f(x) = 
- 
x
A. No; x has a fractional coefficient
B. Yes; degree 0
C. Yes; degree 1
D. Yes; degree 2
Answer: C
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Write the number as a fraction. Do not simplify.0.648
A. 
B. 
C. 
D. 
Decide whether or not the modulo system forms a group.{1, 2, 3, 4}; multiplication modulo 5
A. Not a group B. Group
Solve the problem.In a certain city, the cost of a taxi ride is computed as follows: There is a fixed charge of $2.85 as soon as you get in the taxi, to which a charge of $1.80 per mile is added. Find a linear equation that can be used to determine the cost, y, of an x-mile taxi ride, and use this equation to find the cost of a 8-mile taxi ride.
A. $17.43 B. $18.15 C. $17.13 D. $17.25
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = 0.85x + 3.07 B. y = 0.75x + 4.07 C. y = 0.75x + 5.07 D. y = 0.95x + 3.07