Determine if the given ordered triple is a solution of the system. x + y + z = 12 x - y + 4z = 112x + y + z = 16(3, 5, 4)
A. Yes
B. No
Answer: B
Mathematics
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Find a formula for the nth term of the arithmetic sequence whose first term a and common difference d are given.a = 
, d = 
A. an = 
n + 
B. an = 
n + 
C. an = 
n + 
D. an = 
n - 
Mathematics
Find the average rate of change for the function between the given values.f(x) = x3 + x2 - 8x - 7; from 0 to 2
A. -2
B. - 
C. -28
D. 
Mathematics
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
- 5
- 2
A. -34x
B. -7x
C. -7x
D. -34x
Mathematics
Solve the problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 40 watches B. 47 watches C. 33 watches D. 23 watches
Mathematics