Answer:
remainder = 290
Step-by-step explanation:

= 3x² + 11x + 57 + 
quotient = 3x² + 11x + 57 and remainder = 290
The square root of 137,

can't be simplified anymore, not even by the method of taking out a perfect root
x

(x*

)
Thus, the answer is 11.70 (rounded)
She owned 7 blue pens
21:7
She has 28 pens