Given the sequence of numbers 1,5,11,19...What explicit expression can be used to find the nth term of the sequence of numbers 1,5,11,19...What explicit expression can be used to find the nth term of the sequence? a. x^2+x-1
b. x^2-x-1
c. x^2-1
d. x^2+1

Giving 100 points asap bev has to cut her grandma's grass this weekend and wants to know exactly how much area she will be cutting. calculate the area of the polygon. be sure to show all your work and explain your answer.

14 pointslet x be the seats in the small van and y the seats in the large van. how many seats does the large van have? a company uses two vans to transport worker from a free parking lot to the workplace between 7: 00 and 9: 00a. m. one van has 9 more seats than the other. the smaller van makes two trips every morning while the larger one makes only one trip. the two vans can transport 69 people, maximum. how many seats does the larger van have?

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?