Find the intervals on which the function is continuous.y = 
A. continuous everywhere
B. continuous on the interval [
, ?)
C. continuous on the interval [-
, 
]
D. continuous on the intervals (-?, -
] and [
, ?)
Answer: D
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Solve the formula for the specified variable.I = 
for n
A. n = 
B. n = 
C. n = 
D. n = IR(Ir - E)
Solve and write interval notation for the solution set. Then graph the solution set.-1 < - 
(3x - 1) ? 
A. 
B. 
C. 
D. 
Solve the problem.A balloon is secured to rope that is staked to the ground. A breeze blows the balloon so that the rope is taut while the balloon is directly above a flag pole that is 40 feet from where the rope is staked down. Find the altitude of the balloon if the rope is 120 feet long. (Leave answer in simplified radical form.)
A. 40
ft
B. 80
ft
C. 4
ft
D. 16
ft
Perform the indicated operations and simplify.
A. 
B. 
C. 
D. 
E. 