Find an equation for the ellipse described.Center at (0, 0); focus at (-2, 0); vertex at (8, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
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Use a proportion to solve the problem.It is recommended that there be at least 10.4 square feet of floor space in a classroom for every student in the class. Find the minimum floor space that 40 students require. Round to the nearest tenth if necessary.
A. 384.6 ft2 B. 26.0 ft2 C. 416 ft2 D. 10.4 ft2
Write the polynomial f(x) =x 4 + 6x 2 – 27 as the product of factors that are irreducible over the rationals.
a. 
b. 
c. 
d. 
Round the money amount to the specified place.$31.58 to the nearest dollar.
A. $31.6 B. $40 C. $32 D. $31
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(x-2y)5
A. 
B. x10y5
C. 
D. 