Models of inventory systems frequently consider the relationships among a beginning inventory, a production quantity, a demand or sales, and an ending inventory. for a given production period j, let sj−1 = beginning inventory for period j (ending inventory from period j − 1, the previous period) xj = production quantity in period j dj = demand in period j sj = ending inventory for period j choose the correct mathematical relationship or model that describes how these four variables are related. (1) sj = sj−1 − xj − dj (2) sj = sj−1 + xj − dj (3) sj−1 = sj + xj − dj (4) sj−1 = sj − xj − dj what constraint should be added if production capacity for period j is given by cj? choose the correct answer. (1) xj ≥ cj (2) xj ≤ cj (3) dj ≥ cj (4) dj ≤ cj what constraint should be added if inventory requirements for period j mandate an ending inventory of at least ij? choose the correct answer. (1) sj ≥ ij (2) sj ≤ ij (3) sj-1 ≥ ij (4) sj-1 ≤ ij check my work

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.

the system of inequity is

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

the solid line passing through the points (0,4) and (4,0).

the related equation of solid line is .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

the related equation of dashed line is

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be . the required inequality is

similarly, check the second related equation.

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

its c or d   take a lucky guess my dude

answer: get jesus in your life

step-by-step explanation: