In an arithmetic sequence, a17 = -40 and a28 = -73. Explain how to use this information to write a recursive formula for this sequence.
-this is from egd

50 points! antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

Which expression gives the area of the triangle shown below

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top