16*28=448
28 is 12 inches higher than 16 so it should work.
Answer:


Step-by-step explanation:
Use the Quadratic formula:

You can identify that, in this case:

Now you need to substitute these values into the formula:


Remember that:

Therefore,rewriting and simplifying, you get:



Then, you get the following roots:


24:15 would be the simplified version, if that's what you meant.
Answer:
1183
Step-by-step explanation:
Common difference:
d = 31 - 15 = 16
nth term:

Here, 

