Melissa is represented by variable m.
Josh is represented by variable j.
Chau is represented by variable c.
m+j+c= 148
c=4m
j=m+10
Substitute for c and j for the first equation.
m+(m+10)+4m=148
6m+10=148
6m=138
m=23
Plug the known m value in
j=23+10
j=33
c=4(23)
c=92
Final answer: Melissa=23 messages, Josh=33 messages, Chau=92 messages
Answer:
It can travel 288 miles on 12 gallons.
Step-by-step explanation:
The car can travel 96 miles on 4 gallons. 12 gallons is 3 times more than 4 gallons. This means that the miles the car can travel on 12 gallons is also 3 times more than it can travel on 4 gallons. 3 * 96 = 288.
X+3y=6
3y=-x+6
y=-(1/3)x+2
m=-1/3
y=mx+c
When y=2, x=-3, m=(-1/3),
2=(-1/3)*(-3)+c
2=1+c
c=1
So, the equation would be:
y=(-1/3)x+1
Hopefully that helps
This as a decimal is 2.375
The gradient of the line is -2/3 so A is incorrect
The line is solid so is part of the solution set so the equation needs >= so C and D are incorrect.
The correct answer is B y >= -2/3x + 1
You could have tested the labelled points and any point off the line (say (0,0)) by substituting into each option.
