16. The circle Chas centre (5, 13) and touches the x-axis.
(a)
Find an equation of C in terms of x and y.
(b)
Find an equation of the tangent to Cat the point (10.1), giving your answer in the form
ay+bx+c = 0, where a, b and c are integers.

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.