7a+42h=
3a+3v
20a-4
36a-6n
6a+30
8a-24e
35a-7
4a+4e
27a-3
42a-7

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day