Arectangular model uses a scale of 0.5 inch=10 feet. if the dimensions of the model are 2.5 inches by 3 inches. find the dimensions of the actual object and find the area of the actual object.

Part 1) The dimensions of the actual object are  by  

Part 2) The area of the actual object is

Step-by-step explanation:

Part 1)

we have that

The scale is equal to

rewrite the scale

To find the dimension of the actual object multiply the scale by the dimensions of the model

so

Part 2)

Find the area

The area of rectangle is equal to

substitute

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

a precentage of 6th graders. the population is all 6th graders. let me know if i'm wrong, i hope this ! : )

step-by-step explanation: