Can you check my answers ? question: determine the open intervals on which the function is increasing, decreasing, and/or constant on graph 25. (sorry my infinity signs are ugly)

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?