9. The rate at which the value, V, of a painting changes t years after it is completed is given by the function RV(t). (a) If RV(t) + 4t + 10 (in dollars/year), what is the net change in the value of...

Extracted text: 9. The rate at which the value, V, of a painting changes t years after it is completed is given by the function RV(t). (a) If RV(t) + 4t + 10 (in dollars/year), what is the net change in the value of the painting from 1 year after it's completed to 4 years after it's completed? |6t + 2 (in dollars/year), give a lower estimate for the net change in the (b) If RV(t) value of the painting from 1 year after it's completed to 3 years after it's completed using a Riemann sum with 6 rectangles.