Solve the problem.A local race for charity has taken place since 1993. Using the actual speeds of the winners from 1993 through 1998, mathematicians obtained the formula 
, in which x represents the number of years after 1993 and y represents the winning speed in miles per hour. In what year is the winning speed predicted to be 7.16 mph?
A. 2006
B. 2005
C. 2004
D. 2007
Answer: B
Mathematics
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Solve the problem.A piece of molding 150 cm long is to be cut to form a rectangular picture frame. What dimensions will enclose the largest area? Round to the nearest hundredth, if necessary.
A. 37.5 cm × 37.5 cm B. 30 cm × 30 cm C. 12.25 cm × 37.5 cm D. 12.25 cm × 12.25 cm
Mathematics
Solve by using the quadratic formula.x2 + 18x + 71 = 0
A. 9 ± 
B. -18 + 
C. -9 ± 
D. 9 + 
Mathematics
Write the number as a mixed numeral. Do not simplify.1.01
A. 1
B. 
C. 
D. 
Mathematics
Verify that the general solution satisfies the differential equation. Then find the particular solution that satisfies the initial condition.
?
General Solution: 
Differential equation: 
Initial condition: 
, 
A. 
, so 
; 
B. 
, so
;
C. 
, so
;
D. 
, so
;
E. 
, so
;
Mathematics