What are the coordinates of point Q?

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle