Using the equation x – 3y = -21, create a system of equations that can be easily solved using the addition method. Include the system you created, your solution methods, and your final answer.
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Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

Write two subtraction equations that are equivalent to 5 + 12 = 17.

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !