Write an explicit formula for an, the nth term of the sequence 17,20,23

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?