R=15
explain:
add the numbers in parentheses to get
45/3 = r
divide the numbers to get
15 = r
Ok I recommend you start by
Answer:
C. Rectangle ABCD was dilated with center (0, 0) and a scale factor of 1/2 followed by a translation right 3.5 units and down 8 units.
Step-by-step explanation:
See figure for intermediate steps.
it's either a or b, not sure but I think it's b