Answer:
7
Step-by-step explanation:
а>12-6
The table is:
Number of washes denoted by x: 0, 8, 12
Amount left on card denoted by y: 30, 18, 12
a. Write an equation that shows the amount of dollars left on the card
Solution:
18 – 30 divided by 8 – 0 = -12/8
On simplest form is -3/2
The equation is y = -3/2x + 30
b. Explain the meaning of the negative slope above.
As the number of car washes increase, the dollars left on the card decreases.
c. What is the maximum value of x?
0 = -3/2x + 30
2/3 x 3/2 x = 30/1 x 2/3
Cancel 2/3 x 3/2 and reduce 30 by 3 we get 10, 10 x 2
x = 20
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Answer:
120cm³
Step-by-step explanation:
V=w·h·l=5·3·8=120cm³
Answer:
<em>y = </em>
<em> x - 3 </em>
Step-by-step explanation:
Coordinates of x-intercept are (x, 0)
Coordinates of y-intercept are (0, y)
(0, - 3)
(4, 0)
Slope m =
<em>y = </em><em> x - 3</em>
y = <em> </em>( - 4) - 3 = - 6
(- 4, <em>- 6</em>)
y = ( - 16) - 3 = - 15
(- 16, <em>- 15</em>)
12 = x - 3
x = 15
x = 20
(<em>20</em>, 12)
Step-by-step explanation:
let kevein be x and daniel be y
x=4y (equation i)
x=6+y(equationii)
putting the value of x in equationii
4y=6+y
3x=6
x=2
