Why does -7 - (-4) have the same results as -7 + 4?

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.

1: 4 if the wew 35 surfboards at the beach how many were short boards?