4. Levi bought two Rescue Bots for $7.50 each and three DVDs for $5.25 each. How much money did he spend? *
A. $12.75
B. $25.50
C. $30.75
D. $39.38

C.

Step-by-step explanation:

Two bots 7.50 each

Three DVDs 5.25 each

2 x 7.50 = 15

3 x 5.25 = 15.75

15 + 15.75 = 30.75

$30.75

answer: it's upside down and i can't read it

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.