2. The radius, r, and the coordinates of the centre, C, of the circle with equation
x2 + y2 - 6x + 4y - 12 = 0 are
A. r = 5, C(-2,3)
B. r = 25, C(2,-3)
C. r = 12, C(-3,2)
D. r = 5, C(3,-2)

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Graph the equation. select integers for x

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label