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The function f is defined by f(x) = 7x − 205. If the point (k, 2k) lies on the graph of y = f(x) in the xy-plane, where k is a constant, what is the value of k?
7
14
41
205
w + 5x = 8
The given equation relates the distinct positive numbers w and x. Which equation correctly expresses w in terms of x?
w = 8 + 5x
w = 8 − 5x
w = 8/(5x)
w = 5x/8
The function f is defined by f(x) = 9(2x + 5). For what value of x does f(x) = 99?
3
8
11
47
Carmen needs at least 100 signatures to submit a petition. If Carmen already has 76 signatures, what is the minimum number of additional signatures Carmen needs to submit the petition?
24
66
76
176
How many solutions does the equation 9x = 45 have?
Zero
Exactly one
Exactly two
Infinitely many