Let
x-------> the number of hours Ashley worked during the week
y------> Ashley's weekly pay
we know that
Ashley earns $8.50 per hour at her job and if she works more than 35 hours in a week she is paid 1½ times her regular wage for the overtime hours worked
so
case a) if she worked no more than 35 hours
![x \leq35\ hours](https://img.qammunity.org/2019/formulas/mathematics/high-school/vc92hj3o9rp2gp040qxrkcr6lw7z38d39i.png)
In this case the equation is equal to
![y=8.50x](https://img.qammunity.org/2019/formulas/mathematics/high-school/pi9c3a8ma5c4hxzn1o59qhwom7cadb3ys6.png)
case b) if she worked more than 35 hours
![x>35\ hours](https://img.qammunity.org/2019/formulas/mathematics/high-school/wqwmhj6p7be3kt81ikmpu9wja5bu96bp8d.png)
in this case
![\$8.5*1.5=\$12.75](https://img.qammunity.org/2019/formulas/mathematics/high-school/r68eo6m2whrgsmsqh005n9psodxoijwy1o.png)
![\$12.75-\$8.50=\$4.25](https://img.qammunity.org/2019/formulas/mathematics/high-school/ew5z1ci1t7dz57cvxm8l1xhfxjwp57yg5h.png)
the equation is equal to
![y=(x-35)*4.25+8.50*x](https://img.qammunity.org/2019/formulas/mathematics/high-school/isevbhfqx7xdeqlut3cochcwcw4q33barc.png)
therefore
the answer part a) is
![y=8.50x](https://img.qammunity.org/2019/formulas/mathematics/high-school/pi9c3a8ma5c4hxzn1o59qhwom7cadb3ys6.png)