Answer:
$6200
Explanation:
Stella's Pay, g(x)=190+0.07x
Brianna's Pay, f(x)=407+0.035x
If their weekly pay is the same, then: g(x)=f(x)
190+0.07x=407+0.035x
Collect like terms
0.07x-0.035x=407-190
0.035x=217
Divide both sides by 0.035
x=6,200
When each of their total sales is $6200, their weekly pay will be the same.