In an arthemitic progression, if the common difference (d= -4) and the seventh term is 4 then find the first 3 terms

Given that abcd is a rhombus, what is the value of x?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

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?