If  and , what is

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?

A. ?2,600
B. 800
C. 80
D. 100
E. 250

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Answer: A

Mathematics

Decide whether the ordered pair is a solution of the given system.(-1, 5)x + y = 6x - y = -4

A. Yes B. No

Describe and graph the interval of real numbers.x is positive

What will be an ideal response?

Find the vertex and the intercepts. Then graph the function.f(x) = x2 + 2x - 3

A. Vertex (- 1, - 4); 
x-int = (3, 0) and (1, 0); 
y-int = (0, -3)

B. Vertex (- 1, - 4); 
x-int = (-3, 0) and (1, 0); 
y-int = (0, -3)

C. Vertex (1, - 4); 
x-int = (-1, 0) and (3, 0); 
y-int = (0, 3)

D. Vertex (1, - 4); 
x-int = (-1, 0) and (3, 0); 
y-int = (0, -3)

Find the solution of the initial-value problem and use it to find the population when t = 10.