The talk-time battery life of a group of cell phone is normally distributed with a mean of 5 hours and a standard deviation of 15 minutes.
c) What percent of the phones have a battery life less than 5 hours or greater than
5.5 hours? (include 1 decimal place WITHOUT the % sign)

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1

probability for j is 1/4

while

a is 1/6

you can't solve x because it is 2 linear equation and you only have one equation

3x + 4y -25 =0 represents the amount of change sianna should recieve