Solve the given system of equations by referring to the graphs shown below.-8x + 1 + 6x = -3x + 6
A. x = -6
B. x = -1
C. x = 6
D. x = 5
Answer: D
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Simplify.i24
A. -1 B. i C. 1 D. -i
Solve the problem.If f varies jointly as q2 and h, and 
when 
and 
, find f when 
and 
.
A. f = 8 B. f = 18 C. f = 72 D. f = 24
Provide the proper response.It can be shown that an ellipse with foci (c, 0) and (-c, 0) where the sum of the distances from any point 
of the ellipse to the two foci is 2a has equation 
+ 
= 1. Use this result to find an equation of an ellipse with foci (3, 0) and (-3, 0), where the sum of the distances from any point of the ellipse to the two foci is 8.
A. 
+ 
= 1
B. 
+ 
= 1
C. x2 + y2 = 64
D. 
+ 
= 1
For the following numbers, (i) use a calculator to multiply; and (ii) estimate the product by rounding the numbers to the nearest thousand and multiplying.
6539 x 3465 ¯¯¯¯¯¯ A) (i) 22,657,635 ; (ii) 21,000,000 B) (i) 22,647,635 ; (ii) 20,900,000 C) (i) 22,657,635 ; (ii) 20,900,000 D) (i) 21,657,635 ; (ii) 22,000,000 E) (i) 22,647,635 ; (ii) 21,000,000