The graph of a function f is given. Use the graph to answer the question.For which of the following values of x does f(x) = 20?
A. 20
B. 70
C. 40
D. 50
Answer: C
Mathematics
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Determine if the given ordered pair is a solution of the equation.y = 
x + 
; 
A. A solution B. Not a solution
Mathematics
Find the domain and range of the inverse of the given function.f(x) = x2 - 7; x ? 0
A. Domain and range: all real numbers B. Domain: [-7, ?); range: [0, ?) C. Domain: all real numbers; range: [-7, ?) D. Domain: all real numbers; range: [7, ?)
Mathematics
Evaluate the expression.7 ? (8 - 15)2
A. -49 B. -343 C. 343 D. 49
Mathematics
Solve the problem using the elimination method.Two angles are supplementary, and one is 5° more than six times the other. Find the larger angle.
A. 70° B. 155° C. 25° D. 110°
Mathematics