Elana's aunt bought her a $150 savings bond when she was born. when elena is 20 years old, the bond will have earned 105% in interest. how much will the bond be worth when elena is 20 years old

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.