Alternating tail and head (with either coming first)

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Which function has the domain x> -11? y= x+ 11 +5 y= x-11 +5 y= x+5 - 11 y= x+5 + 11