Which could be the approximate value of the correlation coefficient for the accompanying scatter plot?

a) -0.85
b) -0.16
c) 0.21
d) 0.91

Let r = 3. what is the value of r + 58?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet