The intensity, io, of a light source is reduced to i after passing through d meters of fog according to the formula i = ioe−0.22d. if 3,000 lumens of light are present initially, what is an equivalent expression written as a percentage rate of lumens lost? hint: find the value of e−0.22 on your calculator.

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total