A projection made in January of 2013 determined that x years later, the average property tax on a three-bedroom house in a certain community will be

A projection made in January of 2013 determined that x years later, the average property tax on a three-bedroom house in a certain community will be

T(x) = 59×3/2 + 60x + 1000, 

where T(x) is in dollars.

(a)Use increments to estimate the amount by which the property tax will increase during the first half of the year 2015.

(b)Use increments to estimate the percentage by which the property tax will increase during the first half of the year 2015