The value of a house in 2015 was 400000. its value has been doubling each decade. 1. if v is the value of the home, in dollars, write an equation for v in terms of d, the number of decades since 2015.
2. What is v when d = -1? What does this value mean.
3. What is v when d = -3? What does this value mean.

Acircular garden with radius of 8 feet is surrounded by a circular path with a width of 3 feet. what is the approximate area of the path alone? use 3.14 for π

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a