Find the product.(4x - 2y + 7)(4x - 2y - 7)
A. 16x2 + 16xy - 4y2 - 98
B. 16x2 - 16xy + 4y2 - 49
C. -16xy - 28x + -14y - 49
D. 8x2 - 4y2 - 98
Answer: B
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Solve the problem.A rectangular swimming pool has a parabolic drain plate at the bottom of the pool. The drain plate is shaped like the region between 
and the line 
from 
to 
The pool is 10 ft by 20 ft and 8 ft deep. If the pool is being filled at a rate of 
alt="" style="vertical-align: -4.0px;" /> what is the fluid force on the drain plate after 4 hours of filling? Round your answer to two decimal places if necessary. A. 153.92 lb B. 486.72 lb C. 76.96 lb D. 166.4 lb
Solve the triangle.a = 8, b = 14, c = 16
A. A = 32°, B = 59°, C = 89° B. A = 30°, B = 61°, C = 89° C. A = 28°, B = 61°, C = 91° D. no triangle
Solve. Write results using scientific notation.The following equation gives the number of atoms in 390 g of fluorine. How many atoms are there? A = 390 g Fl x 
x 
A. 4.46 x 1026 atoms B. 2.93 x 1024 atoms C. 1.23 x 1025 atoms D. 1.24 x 1025 atoms
Write an equation for the ellipse.Foci (±6, 0) and y-intercepts (0, ±8)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1