Which function has an inverse that is also a function? g(x) = 2x – 3 k(x) = –9x2 f(x) = |x + 2| w(x) = –20

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

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?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle