Can anyone answer this i need real help.. the answer for 18. is 11/4(as fraction), but how did they get that? from 2 3/4..

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?

Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.

In each diagram, line p is parallel to line f, and line t intersects lines p and f. based on the diagram, what is the value of x? ( provide explanation)