18. Given the following four lines, pick the true statement. Line 1:
Line 2:
Line 3:
3y = 4x + 3
4y = 3x - 4 3x + 4y = 8
Line 4:
4x + 3y = -6
O
A. Lines 1 and 4 are parallel
B. Lines 2 and 3 are parallel
C. Lines 2 and 4 are perpendicular
D. Lines 1 and 2 are perpendicular

#12 find the value of x. #13 find the value of the variable.

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters