If f(x) = -5x - 4 and g(x) = -3x-2, find (f+9)(x).
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a. (f+g)(x) = -88-6
b. (f+g)(x) = 5* + 3x + 6
c. (f+g)(x) = -5x - 3x – 6
o
d. (f+g)(x) = -54-7x-2

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

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)