Would X be 15 if you solve for x Help asap

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

Evan went to the park and saw for animals each animal was either a duck or dog if he saw a total of 14 legs how many of each animal did he see