Renata drew an accurate map showing her house and her friend Becky's house. The scale on the map is 1 centimeter = 1/2 mile. If the actual distance from her house to Becky's house is 2 1/2 miles, what is the map distance, in centimeters?

Anyone know? is appreciated! will mark brainliest if correct!

What is the number 321,000,000 in scientific notation? also what is the number? ?

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25