What is the instantaneous velocity of the hummingbird at
t=1 st=1\,\text{s}
t=1s
t, equals, 1, start text, s, end text
?

What is the quadric regression equation that fits these data

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.

Which of the following is not a subset of {1,2,3}?