If hk is an altitude of triangle hij, mzikh = (4x + 50°, mzhik - 439, and ki = x - 7, find kl.
a. 3
b. 6
c. 9
d. 10

Arectangle with an area of 47 m² is dilated by a factor of 7. what is the area of the dilated rectangle? enter your answer in the box. do not leave your answer as a fraction.

If f(x)=x+7 and g(x)=1/x what is (fog)(x)

What is the distance between the points (2, 5) and (5,9)?