A QUESTION ON MATH
A university student can choose one elective course for his study from two different faculties.
Faculty A provides 15 courses and faculty B provides 31 courses. How many choices are there for the student if
(a) all the courses provided are different?
(b) 2 courses from faculties A and B are the same?

4+6x-3x^3 in standard form with explanations because i don’t understand

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )