Solve the equation by completing the square.8x2 + 7x = -2
A. 
B. 
C. 
D. 
Answer: C
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Graph the function. Identify the vertex, x-intercepts, and the equation for the axis of symmetry.f(x) = x2 + 4x - 7
A. 
vertex: (- 
, - 
)
x-intercepts: (-4, 0) and (3, 0)
axis of symmetry: x = - 
B. 
vertex: (4, 0)
x-intercept: (4, 0)
axis of symmetry: x = 4
C. 
vertex: (-2, -11)
x-intercepts: (-2 ± 
, 0)
axis of symmetry: x = -2
D. 
vertex: (-2, 3)
x-intercepts: none
axis of symmetry: x = -2
Find the amount of each payment needed to accumulate the indicated amount in a sinking fund. Round to the nearest cent.
$5,100, money earns 6% compounded quarterly, 4 years
A. $941.61 B. $1,165.81 C. $573.55 D. $284.43
If a problem asks you to “Find a formula . . . “ you might begin by
(a) drawing a sketch of the problem situation. (b) understanding the terms used in the problem. (c) looking for relationships between known quantities and the unknown quantity. (d) making a tables of values, using n as the unknown quantity. (e) trying any one of the above.
Determine whether the expression is a monomial.2x + 7
A. Monomial B. Not a monomial