In 2018, a researcher took a sample of 25 pharmacies and found the following relationship between x and y, where x represents the amount of money (in millions of dollars) spent on advertising and y represents the total gross sales (in millions of dollars). The estimated least-squares regression equation was y = 3.40 + 11.55x. If a pharmacy spent $2 million on advertising in 2018, what would be its predicted gross sales for 2018?
Choose one:
$50.0 million
$23.1 million
$26.5 million
$2.0 million