Add using columns.Add 3x3 + 8x + 7 and 6x2 + 6x + 8.
A. 3x3 + 14x2 + 13x + 8
B. 3x3 + 6x2 + 14x + 15
C. 9x3 + 14x2 + 7x + 8
D. 9x3 + 14x + 15
Answer: B
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Solve the formula for the indicated variable. Then use the supplied values to solve the equation.The relationship between the distance p from an object to a lens, the distance q from the image to the lens, and the focal length f (the distance from the lens to the principal focus) is given by 
Solve for f. What is the focal length when p is 726 mm and q is 24.2 mm? (All values are approximate.)
A. f = p + q = 750 mm
B. f = 
+ 
= 1.00 mm
C. f = 
= 23.4 mm
D. f = pq - p - q = 16,800 mm
Solve the problem.An experimental model for a suspension bridge is built. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 12.25 inches tall and stand 70 inches apart. Find the vertical distance from the roadway to the cable at a point on the road 14 inches from the lowest point of the cable.
A. 1.76 in. B. 2.16 in. C. 1.96 in. D. 7.84 in.
Write the augmented matrix for the system.
A. 
B. 
C. 
D. 
Add.5 + 0
A. 10 B. 5 C. 1 D. 0