HI PLS HELP ASAP ILL GIVE BRAINLIEST

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Solve for n. round to the tenths place, if necessary. 14.2 cups of flour6 loaves of bread= 20 cups of flour n

The poll report includes a table titled, “americans using cash now versus five years ago, by age.” the age intervals are not equal. why do you think the gallup organization chose the age intervals of 23–34, 35–54, and 55+ to display these results?