Answer:
Step-by-step explanation:
Putting x = 1
=>
Given that f(1) = 1
=>
=> -------------------(1)
Now,
Putting x = 2
=>
Given that f(2) = 5
=>
=>
=> ----------------(2)
Subtracting (2) from (1)
For b , Put a = 9 in equation (1)
1.£500 is deposited in a bank paying 2% compound interest per annum. What is the balance after 2 years?
1 answer:
Formula for compound interest: A = P( 1 + r/n)^nt
A = final amount
P = initial principal balance
r = interest rate
n = number of times interest applied per time period
t = number of time periods elapsed
^ = I used this symbol to present that a the number needs to go higher (see picture)
1. 500(1 + 2/100)^2 = 520.2
£520.20
2. 400(1 + 1.75/100)^2 = 414.12
£414.12
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Answer:
x = - 15
Step-by-step explanation:
Given
+ 3 = x - 2
Multiply through by 3 to clear the fraction
4x + 9 = 3x - 6 ( subtract 3x from both sides )
x + 9 = - 6 ( subtract 9 from both sides )
x = - 15