Answer:
(6, -4)
Step-by-step explanation:
So -r/4<u><</u>8
treat it as kind of an equal sign so do the sam eto both sides
multily both sdies by 4 to gert rid of fraciton
-r<u><</u>32
multiply by -1
remember when multipy by -1 flip the sign
r<u>></u>-32
Answer:
The monthly cost for 45 minutes is $18.42
Step-by-step explanation:
Let
x -----> the total calling time in minutes
y ----> the monthly cost in dollars
we have the ordered pairs
(42,18.15) and (90,22.47)
step 1
Find the slope
The formula to calculate the slope between two points is equal to
substitute the values
step 2
Find the linear equation in point slope form
we have
substitute
step 3
Find the monthly cost for 45 minutes of calls
For x=45 min
substitute the value of x in the linear equation and solve for y
therefore
The monthly cost for 45 minutes is $18.42
Answer:
The mean is 30 and there are 2 patients over this age.
Step-by-step explanation:
Add up 27+13+16+20+41+9+84=210
Then divide by the amount of numbers "7" so
210/7 is 30.
There are 2 patients over the age of 30.
Make sure that you are correct and do the problem twice.