Question 16 4 pts
The number of bacteria in a culture is decreasing exponentially with time, as shown in the
table at below. Which equation represents the number of bacteria (y) present at any time
(t)?
Day Bacteria
o
1000
1
250
2.
62.5

Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class