Decide whether or not the functions are inverses of each other.f(x) = - 
x, g(x) = - 3x
A. Yes
B. No
Answer: A
Mathematics
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Solve for the variable.0.8x - 0.4(30 + x) = 0.40(30)
A. x = 60 B. x = 70 C. x = 50 D. x = 30
Mathematics
Multiply the rational expressions. Simplify, if necessary.
? 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.You have 76 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area.
A. length: 38 feet, width: 38 feet B. length: 19 feet, width: 19 feet C. length: 38 feet, width: 19 feet D. length: 57 feet, width: 19 feet
Mathematics
Multiply. Simplify, if possible.5 ? 9
A. -40 B. 45 C. 36 D. 40
Mathematics