Tommy posts 11 pictures on Instagram every day . Elizabeth posts 15 pictures on Instagram every day . Part A : Define each variable and write an algebraic expression to describe the combined number of posts for Tommy and Elizabeth after any given number of days Part B : After 7 days , how many pictures have Tommy and Elizabeth posted altogether? How do you know ?
Tha answer would be You can just think of any variable for example let's use "T" , "E". Then do T +E for part a. Then do T=11 E=15. After do 11 •7 and 15•7. 11•7=77 . 15•7=105. Last do 105+77 and it equals 182.