Find the sum.5 + (-15) + 1
A. -9
B. 19
C. -11
D. 21
Answer: A
Mathematics
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Answer the question(s) based on the following situation: A dishonest coin (landing heads 
of the time) is tossed 1350 times. The random variable X denotes the total number of heads that come up in the 1350 tosses.What is the interquartile range for this distribution?
A. approximately 30.15 B. approximately 18 C. approximately 24.3 D. approximately 12.15 E. none of these
Mathematics
Solve the equation. Express radicals in simplest form.8x2 - 56 = 0
A. 7
B. ±7
C. 8
D. ±
Mathematics
Solve the problem.A man earned $3500 the first year he worked. If he received a raise of $600 at the end of each year, what was his salary during the 15th year?
A. $12,500 B. $11,900 C. $8400 D. $3500
Mathematics
Graph the function.y = 
- 3
A. 
B. 
C. 
D. 
Mathematics