Answer :
Step-by-step explanation:
Let x = Rosalyn's hourly wage and we know that she earns this much up to 40 hrs per week. Beyond 40 hrs, her hourly wage increases to 2.5× the original rate so since she worked 8hrs past 40 hrs, we can write her total salary for the week as
[tex]40x + 8(2.5x) = \$1470[/tex]
Solving for x, we find that
[tex]40x + 20x = \$1470 \Rightarrow 60x = \$1470[/tex]
or
[tex]x = \$24.50/\text{hr}[/tex]