Asocial networking site recorded that 80% of the people who became members of the site one month were between 30 and 40 years old. the equation below represents this information, where x represents the total number of people who became members of the site that month:

x = 0.8x + 72

how many people who became members of the site that month were between 30 and 40 years of age?

112
288
360
432

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.

the answer is b.)

< 1=< 2

total of apples - take away four

6-4 = 2

answer is 2 apples

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870