Answer:
The extra hours is 12 hours
Step-by-step explanation:
We are given
She has already saved up $50 for the dress
and this is equation of line
so, y-intercept is 50
now, we can find slope
we can select any two points and then we can find slope
x1=0 , y1=50
x2=2 , y2=75
now, we can use formula
now, we can plug values
now, we can find equation
y=mx+b
we are given y=200
so, we can set it to 200 and then we can solve for x