Can somebody me with numbers 6 and 7 plzzz i’ll give u brainliest

Which is f(5) for the function –2x2 + 2x - 3?

To decrease an amount by 16% what single multiplier would you use

If you invest 1,500 today in a bank that gives you a 5 percent annual interest rate, which of these items can you buy in two years? a. electronics worth $1,650 b.fitness equipment worth $1,700 c.a holiday package worth $2,000