5x + y = 2x² + 6
y + 4x = 7x - 2

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

With number 11 ( show how you got the answer)

What is the solution to the division problem below x3+x2-11x+4/x+4