You move left 4 units and right 2 units. You end at (8, 8). Where did you start?

(10,8)

Step-by-step explanation:

You actually only move 2 left since 2 left and 2 right cancel out. So, you add 2 to the x value to find 10.

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation: