How do i know that my angle measurements are acute

Write the equation in logarithmic form e^x=403.429

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?