Elsa knows that for every bushel of apples she sells she earns $9 and for every basket of pears she earns $11. she uses the expression 9a + 11p to keep track of her earnings. part a: identify the coefficients and variables in the expression. (3 points) part b: how many terms are in the expression, what are they, and how do you know? (4 points) part c: which term in the expression shows the total earned from selling baskets of pears? (3 points) i only need with a