May raked 40% of the
yard and filled up 12
bags of leaves. how
many bags will she need
to rake the whole yard?

30 bags

Step-by-step explanation:

she raked 40 % of the yard to fill up 12 bags , by proportion:

40% = 12bags

1% = 12/40 bags,

Then 60 % = 12/40 x 60

= 18

Therefore the total bags needed to fill the whole yards will be

18 + 12

= 30

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)