7. Becky Graham earns $15 per hour for up to 300 units of production per eight-hour day. If she produces more than 300 pieces per day, she will receive an additional piece rate of $.40 per unit. A summary of her work week follows: Hours Worked Pieces Finished Monday 8 350 Tuesday 8 280 Wednesday 8 320 Thursday 00 290 Friday 8 300 (a) Determine Graham's earnings for each day and for the week. (b) Prepare the journal entry to distribute the payroll for the week