Perform the operation indicated. Simplify.
+ 
A. 
B. 
C. 
D. 
Answer: C
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Solve.y + 7 = x2
+ y2 = 49
A. (-
, 6), (
, 6), (0, -7)
B. (-
, 6), (
, 6), (0, 7)
C. (
, 6), (0, 7)
D. (
, 6), (0, -7)
Classify the equation as a contradiction, an identity, or a conditional equation. -[x - (-5x + 4)] = 6 - (-3x + 5)
A. Contradiction B. Conditional C. Identity
Solve the problem.A ship sailing parallel to shore sights a lighthouse at an angle of 12° from its direction of travel. After traveling 2 miles farther, the angle is 22°. At that time, how far is the ship from the lighthouse?
A. 1.11 mi B. 4.31 mi C. 2.39 mi D. 2 mi
Solve the problem.An 8-cylinder Crown Victoria gives 18 miles per gallon in city driving and 21 miles per gallon in highway driving. A 300-mile trip required 15.5 gallons of gasoline. How many whole miles were driven in the city?
A. 132 mi B. 168 mi C. 153 mi D. 147 mi