Reasoning simplify the expression ( - 12.3) +9.1. use pencil and paper. how are (= 12.3) 49.1 and
12.3+(-9.1) related? explain without computing. using a property of operations, what can you say
about their sum?
(-123) + 9.1 =
(type an integer or a decimal)

Hi my sisters and brothers can tell me the answer because i don’t understand the question

The table below represents the displacement of a fish from its reef as a function of time: time (hours) x displacement from reef (feet) y 0 4 1 64 2 124 3 184 4 244 part a: what is the y-intercept of the function, and what does this tell you about the fish? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the fish continued to swim at this rate until it traveled 724 feet from the reef? (2 points)

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g