15.
A certain function is represented by f(x) = -4 x 2 - 3 x + 2. What is the value of f (-2)?

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.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Ineed with math stuff it involves graphs