Answer:
She must sell $1,300 to make her goal.
Step-by-step explanation:
In order to find this you can create an equation in which x is the total number of sales she makes. Firstly, you know she gets 10% (or .1) of that number.
y = .1x
We also know that she works 10 hours at $7 per hour. That means we can add $70 to the end.
y = .1x + 70
Now we are looking to make $200, which means we can put 200 in for y and solve for the total amount of sales.
200 = .1x + 70
130 = .1x
1,300 = x
