15. Alfredo is buying a watch for $200. He will make an initial payment of $50 and then pay the remaining balance in payments of $15 per week. Which function can be used to find a, the amount he will still need to pay at the end of n weeks?

Find the domain of the following expression: 1/(√x)-2

Type the correct answer in each box. spell all words correctly. a sequence of transformations maps ∆abc onto ∆a″b″c″. the type of transformation that maps ∆abc onto ∆a′b′c′ is a . when ∆a′b′c′ is reflected across the line x = -2 to form ∆a″b″c″, vertex of ∆a″b″c″ will have the same coordinates as b′.

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.