Chapter 17 Word Problems
1. If the price of a stock decreases by 20%, and then by an additional 25%, by what percentage has the price
decreased from its original value?
4. 40
B. 45
C. 50
D. 55
2. At Mattress Shop, 75% of the mattresses are memory foam and 20% of the mattresses
are extra firm of
the total mattresses at Mattress Shop, 12% are extra firm memory foam mattresses. What percentage of
the total mattresses are not extra firm non-memory foam mattresses?
Math
E. 8
F.
17
G. 63
H. 80

it would take 5 hours i think idk i'm not that good at math.can you me with my questions i need asap.

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.