Max visits his friend Alona and then returns home the same route. He has taken this trip 32 times and has used his fitbit to record the information. Although there is some variance, he basically bikes 6 mph going uphill, 12 mph when going downhill, and 8 mph on level ground. Find the total distance he bikes if the total biking time of a trip is 6 hours.
If he wants to cut down his total travel time by 1 hour, what speeds would he have to travel at uphill, downhill and on level ground?

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

the correct answer is c

first the equation needs to be simplified. so the equation would now look like:   52-24+11

then you multiply.

and when you multiply, you will get the answer of 39.