Determine whether the equation defines a function with independent variable x. If it does, find the domain. If it does not, find a value of x to which there corresponds more than one value of y.
7x – |y| = –4
Not a function; for example, when x = 0, y = ±4. [Answer may vary.]
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Find the LCM of the expressions.3xy2, x3y
A. 7x3y2 B. 9x3y2 C. 9x2y3 D. 3x3y2
Determine whether the quantity is a variable or a constant.The number of cars passing through an intersection
A. constant B. variable
Find the indicated partial sum for the given sequence.Find the sum of the first 280 positive integers.
A. 39,340 B. 78,680 C. 39,060 D. 78,400
Solve the problem.Wildlife management personnel use predator-prey equations to model the populations of certain predators and their prey in the wild. Suppose the population M of a predator after t months is given by M = 750 + 125 sin 
twhile the population N of its primary prey is given by N = 12,250 + 3050 cos 
tFind the period for each of these functions.
Fill in the blank(s) with the appropriate word(s).