Which statements can be used to describe the original functions f(x) and g(x)? Select two options. When added, the sum of the y-intercepts must be 1. When multiplied, the product of the y-intercepts must be –15. Either f(x) or g(x) has a positive rate of change and the other has a negative rate of change. f(x) could have a rate of change equal to 1 and g(x) could have a rate of change of 2. f(x) could have a rate of change equal to 2 and g(x) could have a rate of change of –6.

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

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: