hello there
the answer is 26x
Let's simplify step-by-step.
5x−2x+6x−x+3x+15x
=5x+−2x+6x+−x+3x+15x
Combine Like Terms:
=5x+−2x+6x+−x+3x+15x
=(5x+−2x+6x+−x+3x+15x)
=26x
hope this helps
Circumference = 2*pi*radius = 2*3.14*3 = 18.84 ft
Area = pi*radius^2 = 3.14*3*3= 28.26 ft^2
We need to call for x minute
+ Phone Company A charges a monthly fee of $42.50, and $0.02 for each minute talk time. So we have to spend: <span>$42.50+ $0.02x
+ </span>Phone company B charges a monthly fee of $25.00, and $0.09 for each minute of talk time. So we have to spend: <span>$25.00+ $0.09x
We solve for x: </span>$42.50+ $0.02x> <span>$25.00+ $0.09x
or </span>$42.50- $25.00 > $0.09x- <span>$0.02x
and we have $0.07x<$27.50
or x< 27.50:0.07 and x< 393.86
The answer is:
If we have to call much time, at least 394 minutes, we should choose A
If not, choose B</span>
1) 0.78
2) 34.28
This is because the number in the 3rd decimal place for both numbers is 5 or above so it is rounded up rather than down.
For this problem, you would replace x with 7 then solve.
3/ (7+2) - sqrt(7-3) =
3/9 - sqrt(4) =
1/3 - 2 = -1 2/3 = -1.67
f(7) = 1