To find the total amount, you will use the formula for finding compounded interest. This means you will be paid interest on top of the interest you have earned each year.
A = P(1 + r)^nt P stands for the principal. r is the interest rate when compounded annually nt is the number of years
To be parallel, gradients are the same! so the gradient is -5/2. y=-5/2x +c substitute the points youve been givrn into this to find c! 7=-5/2 (-6) +c 7=15 +c c must equal -7 y=-5/2x -7