?Solve 
using the quadratic formula.
?
A. ?
B. ?
C. ?
D. ?
E. ?x = 
Answer: D
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What fact family is associated with the rectangular array?1117 by 4
A.
| 1117 ? 4 = 4468 | 4468 ÷ 1117 = 4 |
B. 1117 ? 4 = 4 ? 1117
4468 ÷ 1117 = 1117 ÷ 4468
4468 ÷ 4 = 4 ÷ 4468
Use reference angles to find the exact value of the expression. Do not use a calculator.csc 1020°
A. - 
B. - 
C. - 
D. - 
Find all the first order partial derivatives for the following function.f(x, y, z) = cos x sin2 yz
A. 
= sin x sin2 yz; 
= -2z cos x sin yz cos yz; 
= - 2y cos x sin yz cos yz
B. 
= -sin x sin2 yz; 
= z cos x sin yz cos yz; 
= y cos x sin yz cos yz
C. 
= sin x sin2 yz; 
= - cos x sin yz cos yz; 
= -cos x sin yz cos yz
D. 
= -sin x sin2 yz; 
= 2z cos x sin yz cos yz ; 
= 2y cos x sin yz cos yz
To find the number of units that gives break-even for the product, solve the equation R = C. Round your answer to the nearest whole unit.A manufacturer has total revenue given by the function R = 130x and has total cost given by 
where x is the number of units produced and sold.
A. 120 units B. 933 units C. 800 units D. 140 units