Jaylen leaves school to go home. He walks 12 blocks north and then 5 blocks west. As the bird flies, how far is Jaylen's
home from school?

If i have one apple and give you the apple, how many apples do i have?

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)