4z>-6
divide by 4
z>-6/4
z>-3/2
x+19<= -5
subtract 19 from both side
x<= -24
Answer: The function is: f(x) = 2*(x +1)
Step-by-step explanation:
This can be translated to:
"write an equation of a function where a whole number x corresponds to the next number to x"
the next whole number to x is x+1., and we want the double of that.
Then we have that our function is:
f(x) = 2*(x +1)
Now we can do a little table of it:
f(0) = 2*(0 + 1) = 2
f(1) = 2*(1 + 1) = 4
f(2) = 2*(2+ 1) = 6
Answer:
(a) 64 days
(b) 2 phones calls
Step-by-step explanation:
The question is an illustration of arithmetic sequence.
<em>The number of conversation for 19 people is 171</em>
<u />
<u>(a) 9 people</u>

9 represents the number of people
8 represents the number of conversation each person had
2 represents the number of people having a conversation at once (i.e 2 people at once)
<u>(b) 19 people</u>
We have:

The number of conversation is:

So, we have:




Hence, the number of conversation for 19 people is 171
Read more about arithmetic sequence at:
brainly.com/question/18109692
Yes correct x is 48.02 here is why.
simplify 45.6/109.2 to 0.417582
multiply both sides by 115
simplify 0.417582 x 115 to 48.021978
switch sides
Answer: x = 48.021978