Aman paid 8640rs for a loan of 8000rs taken for 320 days. find the rate of simple interest charged by the bank

Rate of simple interest charge by bank is 9.125

Step-by-step explanation:

Given as :

The principal  = Rs 8000

The amount paid = Rs 8640

The time period = 320 days

Let the rate of simple interest = R

So from simple interest method

Simple Interest =

∵, Interest = Amount - principal

Or,  Interest = Rs 8640 - Rs 8000 = Rs 640  

∴ Rs 640 =

Or, 64000 × 365 = 8000 × 320 × rate

Or 23360000 = 2560000 × rate

So, rate =

∴  Rate = 9.125

I.e rate of simple interest charge by bank is 9.125  Answer

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.