You spent these amounts on natural gas for the past four months: $112, $108, $99, $89. what should you budget for natural gas this month?

If you wanted to compute for your budget for natural gas this month using the data you have recorded about your consumption of natural gas for the past four months, the best estimate to be budgeted this month would be the average consumption for the past 4 months. To get the average, you have to add the four numbers and divide it by four.

600,000,000,000, or 6e14

step-by-step explanation:

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.