Use the quadratic formula to solve the following equation(s):t2 + 10t + 12 = 0 Enter your answer exactly in the form: 
where d and e are integers.
Fill in the blank(s) with the appropriate word(s).
-5 ± sqrt(13)
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Solve the problem.The time between major earthquakes in the Alaska panhandle region can be modeled with an exponential distribution having a mean of 620 days. Find the probability that the time between a major earthquake and the next one is less than 300 days.
A. 0.0006 B. 0.6164 C. 0.0010 D. 0.3836
Find the balance due on the maturity date of the note. Find the total amount of interest paid on the note. Use the United States Rule.Principal: $60,000Interest: 10%Time (days): 180Partial payment:$20,000 on day 60 $20,000 on day 120
A. $23,866.67; $3866.67 B. $21,652.18; $1652.18 C. $22,044.72; $2044.72 D. $24,022.42; $4022.42
Write the improper fraction as a mixed number.
A. 62
B. 62
C. 6
D. 
Solve the problem.It costs $42 per hour plus a flat fee of $33 for a plumber to make a house call. What is an equation of the form y = ax + b for this situation?
A. y = 42x B. y = 33x C. y = 42x + 33 D. y = 33x + 42