We can write two equations for this. x = each minute of calls
Plan A = .1x + 16
Plan B = .14x
Make the two equations equal each other, so we can find when they are the same.
.1x + 16 = .14x
Subtract .1x from both sides
16 = 0.04x
Divide by 0.04 to get x by itself
400 = x.
Earlier, we set x as each minute of calls. This means that after 400 calls, Plan A and Plan B will cost the same.
To find the cost, substitute 400 into both equations by themselves.
Plan A cost = .1x + 16
Plan A cost = .1(400) + 16
Plan A cost = 40 + 16
Plan A cost = $56
Plan B cost = .14x
Plan B cost = .14(400)
Plan B cost = $56
Final answer: After 400 calls, Plan A and Plan B will both cost $56.
Jack's investment on the third year
f(3) = 300(1.02)³ = 318.36 (rounded to 2 decimal place)
Jack's investment on the fifth year
f(5) = 300(1.02)⁵ = 331.22 (rounded to 2 decimal place)
The average rate of change from year 3 to year 5 = (331.22 - 318.36) ÷ (5 - 3)
The average rate of change = 12.86 ÷ 2 = 6.43
Answer:
9
Step-by-step explanation:
Solving the equation on the left we get
(x-9)^2
Answer: The slope is 3
Explanation:
The slope is 3 or 3/1 meaning that it rise 3 and run 1.
