3x + (x - 0.75x)
4x - 0.75x
x= cost of the frame
Answer:
B). graph of increasing exponential function going through point (0, 3)
Step-by-step explanation:
Given function is 
Now we need to find about which of the given choices best describes the given function. Where given choices are:
A). graph of increasing exponential function going through point 0, 2
B). graph of increasing exponential function going through point 0, 3
C). graph of increasing exponential function going through point 0, 1
D). graph of increasing exponential function going through point 0, 4
plug x=0 into given function


Hence graph passes through point (0,3).
growth factor 1.5 is greater than 1 so that means it is increasing function.
Hence correct choice is:
B). graph of increasing exponential function going through point (0, 3)
If he takes 27 minutes to swim 81 laps then how many minutes does it take to do one lap? So we need to divide 81 by 27.
C. 81/27
Find the total distance between the two runners:
5.1 + 4.1 = 9.2 km apart.
We want to calculate the distance each runner does:
Runner A distance = X km, rate = 8.5 km/ hr.
Time = X / 8.5
Runner B distance = (9.2 - x) Total distance between the runners minus what runner A runs equals where they meet).
Rate = 7.4 km/hr.
Time = (9.2-x) / 7.4
Now to find where they meet set the two equations equal:
x / 8.5 = (9.2-x) / 7.4
Cross Multiply:
7.4x = 78.2 - 8.5x
Add 8.5x to both sides:
15.9x = 78.2
Divide both sides by 15.9:
x = 78.2 / 15.9
x = 4.918 = 4.9 km.
Since X is the distance runner A runs, subtract that from his distance from the flag pole:
5.1 - 4.9 = 0.2
The runners meet 0.2 km west of the flag pole.