An equation of a trend line for scatter plot below is y=42x+50. Predict how many more sales the store makes in December than in November.

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft. what is the area of the stage? enter your answer in the box. ft²