You earn $$ 9.20$ per hour at your summer job. Write and solve an inequality that represents the numbers of hours you can work to earn enough money to buy a smart phone that costs $$ 299$ .

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Solution

Step 1 : Write the inequality
Given :
$Earning per hour = $ 9.20 Smartphone cost = $ 299$
Let, the number of hours worked be $$ x$ .
Now, according the the question
Required inequality is $9.20 x \geq 299$
Step 2 : Solve the inequality
$\Rightarrow 9.20 x \geq 299 \Rightarrow x \geq \frac{299}{9.20} ∴ x \geq 32.5 h o u r s$
Hence, you can work at least $32.5 hours$ to buy a smartphone costs $$ 299$ .

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You earn $9.20 per hour at your summer job. Write and solve an inequality that represents the numbers of hours you can work to earn enough money to buy a smart phone that costs $299.

You earn $$ 9.20$ per hour at your summer job. Write and solve an inequality that represents the numbers of hours you can work to earn enough money to buy a smart phone that costs $$ 299$ .