Use the substitution method to solve the system.
x + 
y = -8
x - 4y = 14
A. (2, -8)
B. (-4, -4)
C. (2, -6)
D. (-4, 14)
Answer: B
Mathematics
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Write the vector v in terms of i and j whose magnitude 
and direction angle ? are given.
= 10, ? = 90°
A. v = 10j
B. v = 10i
C. v = 10i + 10j
D. v = 10
Mathematics
Solve the problem.A cable TV company charges $25 for the basic service plus $7 for each movie channel. Let y be the total cost in dollars of subscribing to cable TV, using x movie channels. Find the slope-intercept form of the equation.
A. y = 25x + 7 B. y = 25x - 7 C. y = 7x - 25 D. y = 7x + 25
Mathematics
Find the following.Find -(-x) when x is 34.
A. 0
B. 
C. 34
D. -34
Mathematics
Find the indicated value of the polynomial using the Remainder Theorem. 
(a) -2 (b) -47 (c) 73 (d) -73 (e) 2
Mathematics