How do you write linear equations in standard form? i'm so confused

Someone answer this check out the image!

William invested $5000 in an account that earns 3.8% interest, compounded annually. the formula for compound interest is a(t) = p(1 + i)t. how much did william have in the account after 6 years? (apex)

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0