quadrupling

"She turned sixteen years old last week and got her driver's license. "

"The train tracks are two parallel lines that run through the entire town. "

"One way to encourage your employees to work harder is by giving them incentives."

"to celebrate the name of the Most High"

"The bakery's profits increased this month because they sold many birthday cakes. "

"The multiply of homework assignments this week made me feel overwhelmed. "

"The improvements in the student's math skills were noticeable after the extra tutoring sessions. "

"Quadrupling four gives sixteen."

"The children were running to catch the school bus. "

"The frequency of bus service has been improved from one every 15 to one every 12 minutes."

"The increase in homework assignments this week was significant. "

"It is difficult to provide for my family working on minimum wage."