Find the intervals on which the function is continuous.y = 
A. discontinuous only when ? = -1
B. discontinuous only when ? = 
C. continuous everywhere
D. discontinuous only when ? = 1
Answer: A
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Solve the problem.A rock is thrown vertically upward from the surface of an airless planet. It reaches a height of 
meters in t seconds. How high does the rock go? How long does it take the rock to reach its highest point?
A. 4680 m, 40 sec B. 2400 m, 40 sec C. 1200 m, 20 sec D. 2380 m, 20 sec
Find the value of the x-coordinate of the points at which the functions intersect, and approximate the area of the region described. Round to two decimal places when necessary.f(x) = sinh x, g(x) = tanh x; the region bounded by the graphs of f, g, and ln 4
A. x = 0; 0.26 B. x = 0; 0.37 C. x = 0; 1 D. x = 0; 0.33
Graph the hyperbola.y = ±
A. 
B. 
C. 
D. 
Solve the problem.How long will it take for $1900 to grow to $2200 at an interest rate of 3.7% if the interest is compounded quarterly? Round the number of years to the nearest hundredth.
A. 15.92 yr B. 4.04 yr C. 3.98 yr D. 31.44 yr