Solve the problem.The temperature at the South pole was -12° at 8 am. At 3 pm, it was 31°. By how many degrees did the temperature rise?
A. by -43°
B. by 19°
C. by -19°
D. by 43°
Answer: D
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Find the equation of the parabola determined by the given information.Vertex at the origin, focus at (
, 0)
A. y = 
x2
B. y2 = 12x
C. x2 = 12y
D. x = 
y2
Determine whether the correspondence is a function.Domain: The residents of a townCorrespondence: Each person's weightRange: A set of numbers
A. Yes B. No
Solve the problem.In a certain city, the cost of a taxi ride is computed as follows: There is a fixed charge of $2.90 as soon as you get in the taxi, to which a charge of $2.20 per mile is added. Find an equation that can be used to determine the cost, C, of an x-mile taxi ride, and use this equation to find the cost of a 2-mile taxi ride.
A. $8.20 B. $7.48 C. $7.18 D. $7.30
Combine like terms and write the resulting polynomial in descending order of powers.8a9 - 2a9 + 4a5 + 15a9 - 11a5
A. 14a9 B. 21a9 - 7a5 C. 14a14 D. Cannot be simplified