3. video game porsche bought a new video game. the first time she played, it took her 24 minutes to reach level 2, the second time it took 18 minutes, the third time it took 16 minutes, and the fourth time it took 12 minutes. use mental math to determine how many minutes she spent at level 1 while playing these four games.

it is 70 minutes total

Step-by-step explanation:

just add them

are ya tryin to ask something or is this a statement

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.