The first term of an arithmetic progression is -3 and the common difference is 8. what is the 28th term?

213
226
229
220

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Find cot x if sin x cot x csc x = √2

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?