For the standard normal curve, find the z-score that corresponds to the 30th percentile.
a) -0.53
b) -0.98
c) -0.12
d) -0.47

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.