Provide an appropriate response.Let an= a1+ (n - 1)d1and bn= b1+ (n - 1)d2be arithmetic sequences. Given that 
is also an arithmetic sequence, find c1.
A. a1+ b1+ r(d1+ d2)
B. a1+ b1
C. a1+ b1+ d1+ d2
D. a1+ r?b1
Answer: D
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Solve the problem.An experimental model for a suspension bridge is built in the shape of a parabolic arch. 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 stand 60 inches apart. At a point between the towers and 15 inches along the road from the base of one tower, the cable is 2.25 inches above the roadway. Find the height of the towers.
A. 8.5 in. B. 9.5 in. C. 9 in. D. 11 in.
s(t) is the position of a body moving along a coordinate line; s(t) is measured in feet and t in seconds, where t?0. Find the position, velocity, and speed of the body at the indicated time.
Write as a percent.0.416
A. 0.416% B. 416% C. 41.6% D. 0.0416%
Write the equation of a sine function that has the given characteristics.The graph of y = 
, shifted 4 units upward
A. y = 
+ 4
B. y = 
- 4
C. y = 
D. y = 