Question

While in the United States visiting her grandmother, Kendra copied the famous family apple pie recipe. When she returns to England, she plans on making the same apple pie for her friends. To do this, Kendra needs to convert the flour from cups to grams. She knows that 0.5 cup of flour has a mass of 64 grams and 2 cups of flour has a mass of 256 grams.. . A) Write a function that shows grams as a function of cups. Use g(x).. I got that one so far - Answer: g(x)=128x. . B) Given this scenario, determine a reasonable domain for this function.

Answer 1

0.5 cup   -   64 g                64 = 0.5 · 128
2 cups    -   256 g              256 = 2 · 128
It means that : 1 cup is equivalent of 128 g.
A ) A function that shows grams as a function of cups:
g ( x ) = 128 x
B ) Domain:
0 ≤ x <  ∞   ( because there aren`t any negative values for x )