Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range.y = x2 + x + 8
A. D: all real numbers; R: (y ? -7.75)
B. D: (x ? 0), R: (y ? 0)
C. D: all real numbers; R: (y ? 7.75)
D. D: all real numbers; R: (y ? 7.75)
Answer: C
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Find the intervals on which the function is continuous.y = 
A. continuous on the intervals (-?, -
] and [
, ?)
B. continuous everywhere
C. continuous on the interval [
, ?)
D. continuous on the interval [-
, 
]
Solve the formula for the indicated variable.I = PRT for P
A. P = IRT
B. P = 
C. P = 
D. P = 
Solve the problem.A location in the Atlantic Ocean extends down to a maximum depth of 16,360 feet. How deep is this location in meters? Use 1 mile ? 1.609 kilometers and round to the nearest meter.
A. 4980 m B. 4985 m C. 4988 m D. 4958 m
Factor the trinomial or state that the trinomial is irreducible.15x2 + 29x + 12
A. (15x + 4)(x + 3) B. (3x - 4)(5x - 3) C. (3x + 4)(5x + 3) D. irreducible