Answer:
She got a %40 discount
Step-by-step explanation:
1) isolate k: 3(-4)>-k
2) combine like terms: -12>-k
3) get rid of the negative sign (NOTE WHEN YOU DIVIDE BY A NEGATIVE IN AN INEQUALITY YOU MUST FLIP THE SIGN): 12
ANSWER: 12
7x+1 + 4x-3 = 42
11x-2=42
11x=44
Divide by 11 on both sides which equals:
x=4
To find the length of DE just plug 4 in for x into the equation:
(7x+1) —> 7(4)+1= 29
29 is the length of DE
Then plug in 4 to EF’s equation:
(4x-3) —> 4(4)-3=13
13 is the length for EF
29+13= 42
So in the end, your answer will be 29.
Our equation would be 20+4n=A
20 represents the cost of the first sheet and then we add plus 4n which represents each additional sheets which leads out to A, our average cost per sheet.
Answer:
The two rates are equivalent.
Step-by-step explanation:
Here we'll find the respective unit rates and then compare those rates:
$168
----------- = $4/car
42 cars
$152
----------- = $4/car
38 cars
These two rates are precisely the same. Thus, we conclude that they are equivalent.
