What is the explicit formula for the arithmetic sequence below? -9, - 4, 1, 6, 11, ...

A. an = 5n - 9
2

b. an = 5n - 14

c. An = 9n + 5

d. an = n + 5

Bill works as a waiter and is keeping track of the tips he ears daily. about how much does bill have to earn in tips on sunday if he wants to average $22 a day? tips by day tips (dollars) monday tuesday wednesday thursday friday saturday $14 $22 $28 $36

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.