Question 388361: Translate the sentence into a mathematical equation. Be sure to identify the meaning of all symbols.
1 The profit derived from the sale of x video cameras is $420 per unit less the sum of $2700 costs plus $120 per unit.
If P is profit and x the units sold, then P = 420x + 2700 - 120x or
If P is profit and x the units sold, then P = 420x - (2700 + 120x) or
If P is profit and x the units sold, then P = - (2700 + ) or
If P is profit and x the units sold, then P = 420x - (2700 - 120x) or
2Find the center (h, k) and radius r of the circle.
x2 + (y + 4)2 = 36
(h, k) = (0, -4); r = 36
(h, k) = (0, -4); r = 6
(h, k) = (-4, 0); r = 36
(h, k) = (-4, 0); r = 6
3Write the expression in the standard form a + bi.
i-55
1
-1
-i
i
4Find an equation for the line with the given properties. Express the answer using the general form of the equation of a line.
Parallel to the line 3x - 4y = 1; containing the point (-1, 0)
3x - 4y = 4
3x - 4y = -3
-4x - 3y = 4
-4x - 3y = 3
5Find the real solutions, if any, of the equation. Use the quadratic formula.
x2 + 8x - 7 = 0
{-4 - , -4 + }
{-1 - , -1 + }
{4 + }
{-4 - 2, -4 + 2}
Answer by solver91311(24713)   (Show Source):
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