What is the rate of change of the average height in feet of the trees on the farm with respect to the number of years since the trees were planted? Need help ASAP

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

If angle 2=3x +1 and angle 3=2x +4what is angle 2

Why is studying fractions important