The regular price of an item at a store is $2,000. If the sale price is $1,120, what percent is the discount?

Aboat's value over time is given as the function f(x) and graphed below. use a(x) = 400(b)x + 0 as the parent function. which graph shows the boat's value increasing at a rate of 25% per year?

Anyone know? will mark brainliest if correct

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?