The following table shows education expenditure in the United States as a percentage of total federal spending in 2009, 2015, and 2019.

The following table shows education expenditure in the United States as a percentage of total federal spending in 2009, 2015, and 2019. Year 1' (year slnee 2000) Percentage P(t) Compute and interpret the average rate of change of P(t) over the period 20092019 (that is, [9, 19]) and over the period [15, 19]. Be sure to state the units of measurement. (a) Compute the average rate of change over the period 2009-2019 (that is, [9, 19]). ' _ v--Select--- a Interpret the average rate of change. 0 U.S. education expenditure, as a percentage of total federal spending, is projected to have increased by this amount per year during 2009-2019. 0 U.S. education expenditure, as a percentage of total federal spending, is projected to have decreased by this amount per day during 2009-2019. (3 U.S. education expenditure, as a percentage of total federal spendlng, is projected to have increased by this amount per month during 2009-2019. 0 U.S. education expenditure, as a percentage of total federal spending, is projected to have decreased by this amount per month during 2009-2019. 0 U.S. education expenditure, as a percentage of total federal spending, is projected to have increased by this amount per day during 2009-2019. (b) Qomputethe average rate of change over the period [15, 19]. ' ---Select--- a Interpret the average rate of change. 0 U.S. education expenditure, as a percentage of total federal spending, is projected to have increased by this amount per year during 2015-2019. 0 U.S. education expenditure, as a percentage of total federal spending, is projected to have decreased by this amount per day during 2015-2019. 0 U.S. education expenditure, as a percentage of total federal spending, is projected to have decreased by this amount per year during 2015-2019. 0 U.S. education expenditure, as a percentage of total federal spending, is projected to have increased by this amount per day during 2015-2019. Q U.S. education expenditure, as a percentage of total federal spending, is projected to have decreased by this amount per month during 2015-2019