Rectangle abcd was dilated to create rectangle a'b'c'd' using point r as the center of dilation. if rd = 15, what is rd'?
a. 3 units
b. 5 units
c. 6 units
d. 9 units

George is 187 cm tall. his son, ralph, is 142 cm tall. who casts the longer shadow. george when the sun is 65° above the horizon, or ralph when the sun is 56° above the horizon? how much longer? (nearest centimeter)

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?