Find the number of subsets of the set.{1, 2, 3, . . . , 8}
A. 512
B. 252
C. 256
D. 16
Answer: C
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Solve the problem.A projectile is fired straight upward. The function 
describes the height of the projectile, f(t), in feet, t seconds after firing. Factor the polynomial 
and write the function in factored form. Use the factored form of the function to find f(2).
A. f(t) = -8t(2t - 7); 48 ft B. f(t) = -8t(2t - 7); 80 ft C. f(t) = t(-16t + 56); 48 ft D. f(t) = t(-16t + 56); 80 ft
Find the center, transverse axis, vertices, foci, and the equations of the asymptotes of the hyperbola.
- 
= 1
A. center: (0, 0)
transverse axis: x = 0
vertices: (0, -9) and (0, 9)
foci: (-
, 0) and (
, 0)
asymptotes: y = - 
x and y = 
x
B. center: (0, 0)
transverse axis: y = 0
vertices: (-2, 0) and (2, 0)
foci: (-
, 0) and (
, 0)
asymptotes: y = - 
x and y = 
x
C. center:(0, 0)
transverse axis: y = 0
vertices: (-9, 0) and (9, 0)
foci: (-
, 0) and (
, 0)
asymptotes: y = - 
x and y = 
x
D. center: (0, 0)
transverse axis: y = 0
vertices: (-9, 0) and (9, 0)
foci: (-2, 0) and (2, 0)
asymptotes: y = - 
x and y = 
x
Solve the problem.A local bank advertises that it pays interest on savings accounts at the rate of 3% compounded monthly. Find the effective rate. Round answer to two decimal places.
A. 36% B. 3.40% C. 3.04% D. 3.44%
Solve the problem.A tree casts a shadow 20 m long. At the same time, the shadow cast by a 68-cm tall statue is 82 cm long. Find the height of the tree. Round results to the nearest unit.
A. 17 m B. 23 m C. 16 m D. 24 m