Evaluate.(4x)2 - 8x for x = 3
A. 12
B. 24
C. 120
D. 136
Answer: C
Mathematics
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Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(8, 7)} B. {(8, 6)} C. {(7, 7)} D. no solution; ?
Mathematics
Find the inverse of the matrix (if it exists).A = 
A. A-1 = 
B. A-1 = 
C. No solution
D. A-1 = 
Mathematics
Use implicit differentiation to find dy/dx.y cos 
= 7x + 7y
A. 
B. 
C. 
D. 
Mathematics
Divide.15.58 ÷ 8.2
A. 19 B. 1.9 C. 0.19 D. 2.9
Mathematics