No,isn’t solution
-7>-2*5+3
-7>-7 wrong
I think that the value of n is -10
9(2j+7+5j) Foil this out to get 18j+7+45j then 63j+7
Answer: 18j+7+45j , 63j+7 I think
Set up a proportion.

Cross multiply:

Divide 20 to both sides:

So it will take 62.5 minutes for her to complete the worksheet.
The area of a triangle is 1/2*base*height
So make your equation: 1/2*b*12=42
6*b=42
b=7
So the base is 7 inches long
Hope that helped!