Answer:
5/8x+1/2x-4=5
or, 5(2x-4)+8x= 5
or, 10x- 20+8x=5
or, 10x-8x= 20+5
or, 2x= 25
or,x= 25/2
:.x= 25/2
Step-by-step explanation:
first we have to make denominator then we can criss cross multiply. we can make in same point .if there is plus we can subtract and if there is front minus if we take it back it must be plus. then we can put same point then we can divide
Answer:
I can’t see it good
Step-by-step explanation:
The answer is $84.29
Let the number of minutes be x.
$35.99 is fixed price and does not depend on the number of minutes x. Each minute costs $0.21 so it depends on x and we have 0.21x in the function. However, 250 minutes are already included and should not be included in x. Therefore, the function that represents the monthly cost looks like this:
f(x) = 35.99 + 0.21 * (x - 250)
Now, let's calculate for x = 480 minutes:
f(480) = 35.99 + 0.21 * (480 - 250)
f(480) = 35.99 + 0.21 * 230
f(480) = 35.99 + 48.30
f(480) = 84.29
Answer:
The function 
best models the situation.
Step-by-step explanation:
The values in the table do not lie over a straight line because their slope is not a constant; for example
we see here that 
therefore a linear equation cannot represent this situation.
The values in the table are increasing exponentially , therefore the equation modeling the situation will be of the form:
we take two points from the table for evaluating 
and 
namely points 
and 
thus we have
(1). 
(2).
From equation (1) we solve for 
and put this value into equation (2)
with this value , we solve for in equation (1):
Thus we have the equation
