I'm having trouble with this

what is the height of this triangle?

a.4.5 ft

b.9 ft

c.49 ft

d.882 ft

(hurry! ) which expression is equivalent to the following complex fraction?

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.

20 ! brainliest ! add and simplify your answer.