The graph shows witch inequality? (picture included) 1. -2.5 + y < 5
2. y is less than or equal to -2.5x + 5
3. 2.5x + y is greater than or equal to 5
4. 5x + 2y is less than or equal to 5

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

50

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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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