Equations
Terrence earns $10 per hour plus a weekly bonus of $30.
The total earnings can be expressed as a function:
y = 10x + 30
Where y is the total earnings and x is the number of hours Terrence works.
We need to find the number of hours needed for Terrence to make at least $245 this week, that is:
[tex]10x+30\ge245[/tex]Subtracting 30:
[tex]10x\ge245-30[/tex]Operating:
[tex]10x\ge215[/tex]Dividing by 10:
[tex]x\ge21.5[/tex]Assuming the number of hours cannot be decimal, the next integer is the solution.
Terrence must work 22 hours to earn al teast $245