Find the sum.-9 + 13
A. 22
B. 4
C. -4
D. -22
Answer: B
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Identify the equation as representing either a circle, a parabola, an ellipse, or a hyperbola.x2 + y2 + x + y = 0
A. Circle B. Parabola C. Hyperbola D. Ellipse
In a survey it was determined that the demand equation for VCRs is given by
?
?
The demand equation for blank VCR tapes is given by
?
?
where p and q denote the unit prices, respectively, and x and y denote the number of VCRs and the number of blank VCR tapes demanded each week. Determine whether these two products are substitute, complementary, or neither.
What will be an ideal response?
Solve the equation for ? if 
. Do not use a calculator.
?
?
A. 120°; 240° B. 150°; 330° C. 60°; 240° D. 45°; 225° E. 30°; 120°
Determine the absolute value of the complex number.z = -15 - 9i
A. 3
B. 2i
C. 12
D. i