Answer:
Variable rate of change.
Step-by-step explanation:
Plot the points and you'll see that the graph is not a straight line, therefore the rate of change is variable.
Answer:
x= first number y= second
x=2y+9 and x+y=129, these are the equations...solving gives x=89,y=40
Step-by-step explanation:
The lowest common multiple of 2 and 7 is 14, so 14 days will pass before he does both chores again.
I underlined the numbers you needed
Answer:
15 or 20
Step-by-step explanation: