I need the right answer and I need it fast

if the average running speed of an amateur athlete (in miles per hour) after training for t days is given by Stt) = 035 In t + 11.9, then answer the following. ROUND YOUR FINAL ANSWERS TO 2 DECIMAL PLACES. A) Find the average running speed of amateur athletes that train for 140 days. [1 miles per hour B) How many days of training would yield an average speed of 13.8 miles per hour? D days