The graph represents the system of equations 
. Solve the system by graphing.
A. 
B. 
C. 
D. 
E. no solution
Answer: C
Mathematics
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Find the slope of the curve for the given value of x.y = x2 + 5x, x = 4
A. slope is - 
B. slope is 
C. slope is 13
D. slope is -39
Mathematics
Solve.Find the equation of a line normal to the curve of 
at 
A. -6
x + 3y - 6
- ? = 0
B. -3
x + 9y - 9 + 
? = 0
C. -3
x + 3y + 3
- ? = 0
D. 
x + 3y - 
- ? = 0
Mathematics
Look at the circuit shown below. The correct Boolean expression is:
a. AB
b. Ä
A + B
c. Ä
A + B
d. Ä
AB
e. Ä
AB
Mathematics
Solve the problem.Erik Allen repairs photocopy machines. According to his schedule, he needs to visit 9 different offices today. How many ways can Erik visit these offices and return to his headquarters?
A. 72 B. 40,320 C. 9 D. 362,880
Mathematics