Solve the equation by completing the square.2x2 + 12x = - 7
A. 
B. 
C. 
D. 
Answer: D
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One of sin x, cos x, and tan x is given. Find the other two if x lies in the specified interval.cos x = - 
,
x in 
A. sin x = - 
, tan x = 2
B. sin x = 
, tan x = -2
C. sin x = 
, tan x = 2
D. sin x = - 
, tan x = -2
Solve the problem.In a 1-mile race, the winner crosses the finish line 10 feet ahead of the second-place runner and 25 feet ahead of the third-place runner. Assuming that each runner maintains a constant speed throughout the race, by how many feet does the second-place runner beat the third-place runner? (5280 feet in 1 mile.)
A. -10.05 ft B. 5.01 ft C. -15.07 ft D. 15.03 ft
Evaluate the expression for the given replacement values.
for x = 54, y = 0.9
A. 60 B. 6 C. 0.017 D. 1.667
Evaluate the algebraic expression under the given conditions.8 - 2y for y = -3
A. 14 B. 10 C. 11 D. 2