Provide an appropriate response.Solve the system of equations using the substitution method:2x + y = -7x - 4y = 10
A. x = 
, y = -2
B. x = 2, y = -11
C. x = -5, y = -3
D. x = -2, y = -3
Answer: D
Mathematics
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Determine whether the graph is connected or disconnected.
A. Connected B. Disconnected
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Find the numerical value of the expression for 
and 
A. a) 3 b) 1
B. a) 1 b) 
C. a) 1 b) 3
D. a) 
b) 
Mathematics
For the given functions f and g, find the requested function and state its domain.f(x) = x + 3; g(x) = 7x2Find f + g.
A. (f + g)(x) = 7x2 + x + 3; (-?, ?) B. (f + g)(x) = -7x2 + x + 3; (-?, ?) C. (f + g)(x) = 7x2 + x + 3; (-?, -3) ? (-3, ?) D. (f + g)(x) = 7x2 - x - 3; (-?, ?)
Mathematics
Find the exponential model 
that fits the points shown in the graph.
a. 
b. 
c. 
d. 
Mathematics