Solve the problem.A rumor spreads through a community of 800 people at the rate 
= 0.1(800 - N)N1/2where N is the number of people who have heard the rumor at time t (in hours). Use Euler's method with h = 0.5 to find the number who have heard the rumor after 1.5 hours, if 1 person heard it initially.
A. about 711 people
B. about 681 people
C. about 702 people
D. about 719 people
Answer: D
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Provide an appropriate response. Solve the following using a constant of variation:How far can a trailer-tractor rig travel in 12 days if it travels at the rate of 1,890 miles in 5 days?
A. 787.5 miles B. 378 miles C. 4,536 miles D. 31.5 miles
Write the standard form of the equation of the circle whose radius is r and whose center is (h, k).r = 
; (h, k) = (0, 0)
A. x2 + y2 = 
B. x2 + y2 = 
C. x2 + y2 = 169
D. x2 + y2 = 13
Solve the problem.A rectangular plot has area 126 square yards with a perimeter of 46 yards. What is the length of one of the longer sides?
A. 13 yards B. 12 yards C. 14 yards D. 16 yards
Find the vertex and axis of symmetry of the graph of the function.f(x) = -x2 - 10x
A. (25, -5); x = 25 B. (-25, 5); x = -25 C. (5, -25); x = 5 D. (-5, 25); x = -5