There is a 4 number code you have to figure out with this and the clue is the signs are multiplying and the first sign is a stop sign that you have to multiply. Please help i’m super confused

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Factor the trinomial below. 12x^2 - 32x - 12 a. 4(3x+3)(x-1) b. 4(3x+1)(x-3) c. 4(3x+6)(x-2) d. 4(3x+2)(x-6)