Which of the following scatterplots do not show a clear relationship and would not have a trend line?

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.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12