A triangle has side lengths of (2.6c + 8.2d) centimeters, (7.3c + 4.6f) centimeters, and (6.5f + 3.6d) centimeters. Which expression represents the
perimeter, in centimeters, of the triangle?
1. 16.4cf + 16.4df
2. 11.1f +9.9c + 11.8d
3. 11.9cf + 10.1df + 10.8cd
4. 9.9c + 8.2f + 14.7d

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

The graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?