Does anyone know how to do this?

71%

Step-by-step explanation:

She has 65% for 1st paper which have 120marks, we can calcule how marks she done:

120*0,65=78

On the 2nd pper she done:

80*0,80=64

The total marks was 120+80=200

She done 78+64=142

200—>100%

142—->x%

X=14200/200=71

Total procent score is 71%

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

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)