(Percent Rate of Change HC)A plumber is hired with an annual…

(Percent Rate of Change HC)A plumber is hired with an annual salary of $55,000. The function a(t) = 55,000 ⋅ (1.12)t models the annual salary, a(t), in dollars, for a given number of years.Part A: Find the percent rate of change. Show all necessary steps. (5 points)Part B: Explain the meaning of the percent rate of change in the context of the problem. (5 points)

(Scale Factor and Dilation HC)Two rectangular pyramids are g…

(Scale Factor and Dilation HC)Two rectangular pyramids are given.The smaller pyramid is a dilation of the larger pyramid.Part A: Determine the scale factor. Show or explain all the necessary steps. (5 points)Part B: If the volume of the larger pyramid is 384 in3, show how the scale factor can be used to determine the volume of the smaller pyramid. (5 points)