A realtor paid $34 for a lamp what price should she sell the lamp for if she wants to make a 40% profit

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?