Answer:
75.09%
Step-by-step explanation:
1st week: 1060
2nd week: 950
3rd week: 1090
4th week: 795
Percent decrease from first to fourth week is 75.09%
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Javier rode his bike for a total of 40 minutes.
Let x be the minutes Javier ride after lunch
Let y be the minutes Javier ride before lunch
The number of minutes he rode after lunch is 4 times the number of minutes he rode before lunch
x = 4 y
The number of minutes he rode after lunch + number of minutes he rode before lunch = 40
x + y = 40
We know x= 4y
4y + y = 40
5y = 40
y = 8
x= 4y so x= 4(8) = 32
Javier ride 32 minutes after lunch
Answer:

Step-by-step explanation:
Remove the parentheses and take out the constansts.

Simplify 7 x 3 to 21.

Use the product rule: 

Simplify 2+5 to 7.

Simplfiy 3 + 8 to 11.

Yes y=3.6 is a direct variation
Subtract 6 which leaves u with -3p=-18 then divide by three on both sides to get p=6