D) 5
3(x + 2) + x = 2x + 16
Distribute the 3 to the (x + 2)l
3x + 6 + x = 2x + 16
4x + 6 = 2x + 16
Subtract 2x and 6 from each side.
2x = 10
Divide each side by 2
x = 5
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Answer:
3 nights
Step-by-step explanation:
Set up an equation that represents the problem:
y = 1.25x + 3.95
Where y is the total cost and x is the number of additional nights you rent the movie
Substitute:
7.70 = 1.25x + 3.95
Subtract 3.95 on both sides:
7.70 = 1.25x + 3.95
-3.95 -3.95
3.75 = 1.25x
Divide by 1.25 on both sides:
3.75 = 1.25x
/1.25 /1.25
3 = x
Therefore, you kept the movie for 3 additional nights.
Answer;
The correct equation;
= 1.01 R
Explanation;.
The formula for resistance (R) = resistivity (r) x Length (L)/Area (A)
As there is an increase in length, there is also an increase in the resistance.
If we increase the length by 1 % of its original value, assuming the area remains constant, then the resistance will also becomes 1% = 1/100 = 0.01 times of its original value as resistance is directly proportional to the length.
Therefore; the new resistance = R + 1/100R
= R + R/100
= 101R/100
The new resistance = 1.01 R
90%
Because if you reduce the fraction 180/200 you get 90/100 or 90%