1. You know that he makes 5% of his sales plus $250 each week. He is paid $35 for each holidays and this month there are four weeks and one holiday. So, if Fernando has $4,000 in sales each week you can write the following expression:
Where y is his paid of this month and x is his sales in each week
The equation to represent Fernando's weekly earnings is y= .05x + 250, where x is his sales. So when Fernando's sales total $4,000 he gets $450 that week.
y = .05x + 250
y = .05(4,000) + 250
y = 200 + 250
y = 400
However, Fernando works 4 weeks this month, so take this answer and multiply it by 4. You get 1800. So Fernando makes $1800 this month, yet there's one holiday so add $35 to the $1800 and you will have your final answer.