At the start of the month the value of the investment is 48.45. by the end of the month the value investment changed by a loss of 13.80. what was the value in dollars, of the investment at the end of the month?

∞ this is your sign

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.