Patricia can buy individual songs for $1.00 to download. Also, an entire album costs $10.00 to download. She can spend no more than a total of $80. She wants to buy no more than four albums, and at least 30 individual songs. The following system of inequalities represents this situation, where x is the number of individual songs and y is the number of albums. x plus 10 y less or equal than 80
x greater or equal than 30
y less or equal than 4

Which yellow shaded region corresponds to Patricia’s possible choices?

The region of possible choices is the area of the xy-plane where all restrictions are satisfied, and is shaded in the picture attached.

Step-by-step explanation:

We have 3 restrictions, plus the condition that both x and y are positive.

The region of possible choices is the area of the xy-plane where all restrictions are satisfied.

The restrictions are:

Then we can graph all the restrictions in paper or software.

In the figure attached we have shaded in yellow the region of possible values.

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step-by-step explanation: