Taylor swam 3 different heats in the 100m freestyle. The first heat was 29.1 seconds, the second heat was 28.7 seconds, and the third heat was 27.2 seconds. What was the difference between her best time and her worst time?

Given that (x-3) is a factor of f(x)=x^3+ax^2-x-6, find a and hence the number of real roots or the equation f(x)=0

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?