15. In a class test, 3 marks are awarded for every correct answer and (-2) marks are awarded for every incorrect answer and no mark for not attempting any question.
i) Rita scored 20 marks. If she has got 12 correct answers, how many questions has
she attempted incorrectly?
ii) Savita scored (-5) marks though she has got 7 correct answers. How many questions
has she attempted incorrectly?

100 points? me its important ‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️

Which function in vertex form is equivalent to f(x) = x2 + 6x + 3? f(x) = (x + 3)2 + 3 f(x) = (x + 3)2 − 6 f(x) = (x + 6)2 + 3 f(x) = (x + 6)2 − 6

Abank manager wants to encourage new customers to open accounts with principals of at least $2 comma 500. he decides to make a poster advertising a simple interest rate of 3%. what must the principal be if the bank manager also wants to advertise that one can earn $10 the first month? can the poster correctly say, "open an account of $2 comma 500 and earn at least $10 interest in 1 month! "?