While driving to work, Mr. Matlack's velocity was $v(t) = 15t + 10$, where $t$ is hours and $v(t)$ is miles per hour. Determine how far Mr. Matlack lives from school if it takes him:

1. $1$ hour to get to work.

   Hint (a):

   Area under the curve is a trapezoid.

2. 4 hours to get to work.

   Hint (b):

   Refer to hint in part (a).

3. $\frac { 1 } { 2 }$ hour to get to work.

   Hint (c):

   Refer to hint in part (a).

4. t hours to get to work.

   Hint (d):

   Unlike parts (a) - (c), you are now being asked to find a distance function, rather than a finite distance.

   Steps (d):

   $s(t)=\frac{1}{2}h(b_{1}+b_{2})=\frac{1}{2}t(v(0)+v(t))=$