19. A circle in the sy-plane has center (5,7) and radius 2. Which of the following is an equation of the circle?
A. (x - 5)2 + (y - 7)2 = 4
B. (x + 5)+ (y + 7)2 = 4
C. (x - 5)2 + (y - 7) = 2
D. (x + 5)+ (y + 7) = 2

When ∆rst is translated 4 units down, what are the apparent coordinates of t’? give 15 points

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

Find the domain of the following expression: 1/(√x)-2