Which expression is equivalent to 13 - (-21)? Choose 1 answers
А
13 +21
B
-21 - 13
-13 +21
D
-21 +13
HURRY

Taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1