For questions 16-19, write each expression in the standard form for the complex number a+bi (2 points each)
please help me ASAP:)
i will give you brainliest

Jackson drew 4 hearts and 29 circles. what is the ratio of circles to all shapes?

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

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