Please help me with this both for 25 points

A 20

B The constant is $4/ square ft

Step-by-step explanation:

We can find the slope of the cooking time versus weight by

m = ( y2-y1)/(x2-x1)

   = (50-30)/( 2.5-1.5)

   = 20/1

The constant is the slope which is 20

For the second problem, we also need to find the slope

We have points, (0,0) and (250,1000)

m = ( y2-y1)/(x2-x1)

 = ( 1000-0)/(250-0)

 1000/250

  4

The constant is $4/ square ft

the monthly balance will be $75,000