Consider the following table:

 $x$ 0 2 4 6 8 10 $f(x)$ 45 44 42 37 26 3

(a) Use this data and a left-endpoint Riemann sum to estimate the integral:
$\int_0^{10} f(x) \, dx \approx$

(b) Use this data and a right-endpoint Riemann sum to estimate the integral:
$\int_0^{10} f(x) \, dx \approx$

(c) Find the average of the left- and right-endpoint Riemann sums to estimate the integral:
$\int_0^{10} f(x) \, dx \approx$

You can earn partial credit on this problem.