Answer:
Range of S:
[tex]105\leq S \leq 245[/tex]
Step-by-step explanation:
We are given the following in the question:
Summer job wage = $7.00 an hour
Range of number of hours worked = 15 and 35 hours every week
[tex]15\leq h \leq 35[/tex]
Weekly salary is given by the equation:
[tex]S=7h[/tex]
where S is weekly salary and h is the number of hours worked every week.
We have to estimate range of salary.
[tex]S = 7h\\15\leq h \leq 35\\7h_1 \leq S \leq 7h_2\\7(15) \leq S \leq 7(35)\\105\leq S \leq 245[/tex]
Thus, Joe's salary ranges from 105 dollars to 245 dollars.