Let, the number of minutes = x
It would be: 310 < 250 + 5x < 338
In short, Your Answer would be Option A
Hope this helps!
I think it is C it is probably wrong ☹️
Answer:
![y=-1.7x-34](https://tex.z-dn.net/?f=y%3D-1.7x-34)
Step-by-step explanation:
An equation of a line is given
, where m is the gradient or ![\frac{Rise}{Run}](https://tex.z-dn.net/?f=%5Cfrac%7BRise%7D%7BRun%7D)
The rise indicates the change in value of y (vertical change in the graph).
The run indicates the change in value of x (horizontal change in the graph).
Let point 1 of the graph be (x,y) = (0,-34) and point 2 be (x,y) = (20,0).
Substitute point 1 into the graph to get the constant c.
![y=mx+c](https://tex.z-dn.net/?f=y%3Dmx%2Bc)
![-34=(-1.7)*(0)+c](https://tex.z-dn.net/?f=-34%3D%28-1.7%29%2A%280%29%2Bc)
![c=-34](https://tex.z-dn.net/?f=c%3D-34)
∴ The equation of the line is, ![y=-1.7x-34](https://tex.z-dn.net/?f=y%3D-1.7x-34)
Greetings from Brasil...
According to the statement of the question, we can assemble the following system of equation
X = 7 + 3Y i
X + Y = 75 ii
So, multiplying ii by -1 and adding with i
X = 7 + 3Y
- X - Y = - 75
- Y = 7 + 3Y - 75
4Y = 68
Y = 17
for X we will use ii:
X + Y = 75
X + 17 = 75
X = 58
The smaller number is: 17
The answer is 75. You can find this using the equation 9 = 0.12x and then dividing 9 by 0.12 or 12%.