Solve the problem.The temperature at the South pole was 7° at 8 am. At 3 pm, it was -41°. By how many degrees did the temperature drop?
A. -34°
B. 48°
C. 34°
D. -48°
Answer: B
Mathematics
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Write a formula for the nth term of the given geometric sequence. Do not use a recursion formula.- 
, - 
, - 
, - 
, ...
A. an = 
n - 1 + 
B. an = - 
+ 
(n - 1)
C. an = - 
n - 1
D. an = - 
+ 
(n - 1)
Mathematics
Find the square.(5x + 2y)2
A. 25x2 + 20xy + 4y2 B. 5x2 + 4y2 C. 25x2 + 4y2 D. 5x2 + 20xy + 4y2
Mathematics
Solve the following system by any appropriate method. If there is no real number solution, so state.3x2 - y2 = 14x2 + 2y2 = 14
A. (
, 4), (
, -4), (-
, 4), (-
, -4)
B. (
, 2), (
, -2), (-
, 2), (-
, -2)
C. (
, 2), (
, -2), (-
, 2), (-
, -2)
D. no real solution
Mathematics
Determine if the given value is a solution to the equation.
(x - 4) + 2 = 
(4x - 7); 7
A. not a solution B. solution
Mathematics