Use the quadratic formula to solve the equation.x2 + 7x + 4 = 0
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.Find the amount of money in an account after 9 years if $2800 is deposited at 8% annual interest compounded semiannually.
A. $5672.29 B. $5711.68 C. $5597.21 D. $5738.68
Use properties of fractions to simplify the expressions. The word per means division and may be replaced by a fraction bar. Round your answer to two decimal places.
A) 0.16 page/min
B) 0.16 min/page
C) 0.21 min/page
D) 6.15 min
E) 0.21 page/min
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three coins are tossed, and the number of heads is noted.
A. 
B. 
C. 
D. 
Solve the problem.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 60 seconds are required to make a 
enlargement, find the time required for a 
enlargement.
A. 252 sec B. 441 sec C. 378 sec D. 315 sec