Answer:
Rate of change of money in Michael's account will be $20 per week.
Step-by-step explanation:
If we draw a graph for the duration of investment on x-axis and amount in the account on y-axis, ordered pairs for both the conditions will be,
After 6 weeks, amount in the account = $140
Ordered pair : (6, 140)
After 12 weeks, amount in the account = $260
Ordered pair : (12, 260)
Rate of change in hi account per week = 
= 
= 
= $20 per week
Therefore, rate of change of money in Michael's account will be $20 per week.
Answer: y=3/2x - 1/2
find the slope
m= 4+2/3+1
m= 3/2
plug in slope and points into equation to find b
y=mx+b
4= 3/2(3) + b
4= 4 1/2 +b
-1/2= b
Answer:
0.85 Euros have the same amount as 1 U.S dollar.
Step-by-step explanation:
Given : The equation 
To find : Number of Euros which has same value as D U.S. dollar ?
Solution :
The equation 
Where, E= amount of Euros
D= amount of U.S dollar.
Now for 1 U.S dollar we put D=1,


Therefore, 0.85 Euros have the same amount as 1 U.S dollar.
This set of points is a function because each input has exactly one outout.
Answer:
Base = 17
Height = 5
Step-by-step explanation:
(4x + 1)(x + 1) = 85
4x² + 4x + x + 1 = 85
4x² + 5x - 84 = 0
∆ = 5² - 4.4.(- 84)
∆ = 25 + 1344
∆ = 1369
x = (- 5 + 37)/8
x = 32/8
x = 4
Base = 4.4 + 1 = 17
Height = 4 + 1 = 5
I hope I helped you.