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Which inequality matches the verbal description?

Marc is saving up for a computer. He has [tex]$\$[/tex] 250[tex]$ saved already. To earn more, he works part-time at a job that pays $[/tex]\[tex]$ 16$[/tex] per hour. Let [tex]$y$[/tex] represent the price of the computer he chooses, and let [tex]$x$[/tex] represent the number of hours he works. To purchase the computer, he will need to save at least [tex]$y$[/tex] dollars.

A. [tex]$y \leq 250 + 16x$[/tex]
B. [tex]$y \geq 250x + 16$[/tex]
C. [tex]$y \geq 250 - 16x$[/tex]
D. [tex]$y \leq 16x - 250$[/tex]


Sagot :

To solve this problem, we need to translate the verbal description into a mathematical inequality.

1. Initial Savings:
Marc has already saved \[tex]$250. This is a fixed amount that contributes towards buying the computer. 2. Additional Savings through Work: Marc earns \$[/tex]16 per hour by working at his part-time job. Let [tex]\( x \)[/tex] represent the number of hours he works. Therefore, his earnings from working can be expressed as [tex]\( 16x \)[/tex].

3. Total Savings:
The total amount of money Marc will have after working [tex]\( x \)[/tex] hours is the sum of his initial savings and his earnings from work.
[tex]\[ 250 + 16x \][/tex]

4. Price of the Computer:
Let [tex]\( y \)[/tex] represent the price of the computer. Marc needs to have at least [tex]\( y \)[/tex] dollars to afford the computer. The phrase "at least [tex]\( y \)[/tex] dollars" implies that his total savings must be greater than or equal to the price of the computer.

5. Formulating the Inequality:
To express that Marc's total savings must be at least [tex]\( y \)[/tex], we set up the following inequality:
[tex]\[ 250 + 16x \geq y \][/tex]

6. Finding the Correct Inequality:
We need to see which of the given options matches this formulation. Rearranging the inequality [tex]\( 250 + 16x \geq y \)[/tex], we get:
[tex]\[ y \leq 250 + 16x \][/tex]

Therefore, the correct inequality that matches the verbal description is:
[tex]\[ \boxed{A. \, y \leq 250 + 16x} \][/tex]