58. A news agent conducted a survey of business magazine subscribers in a town and found that there was circulation of only three business magazines. He made the Venn diagram below to show
the number of subscribers to each of the three magazines: Board Review, Strategy and Finance,
and Investor Journal.
Magazine Subscription
232
196
41
133
Board Review
Set B
Strategy and Finance
Set S
t 5.2
21.
52
84
284
232
232
t 196
428
1
Investor Journal
How many subscribers belong to the set (~$94U UB?
A. 484
B. 443
C. 422
84
Hab
280
D. 370
1133
tlab
a

answer: 59

step-by-step explanation:

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

answer: 88

step-by-step explanation: