An electronics store makes a profit of $69 for every standard dvd player sold and $85 for every portable dvd player sold. the manager's target is to make at least $415 a day on sales from standard and portable dvd players. write an inequality that represents the numbers of both kinds of dvd players that can be sold to reach or beat the sales target. let s represent the number of standard dvd players sold and p represent the number of portable dvd players sold. then graph the inequality.

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Step-by-step explanation:

The store's profit is the sum of the profit on each player multiplied by the number of players. That is, the profit on standard players is 69s, and that on portable players is 85p. The manager wants the sum of these to be more than 415.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

ghjmutmum

step-by-step explanation: