Choose the equation that represents the solutions of 0 = 0.25x4- 8x
025+ 0.25)2 - 4)(1)(-5)
-1.25 V1.25)* - 4)(1)(-8)
8+ V(-8)-4(0,25)(0)
-8+ V-8)2 – (4)(0.25)(0)

answer

you start with $5 and save $10 a week until you have at least $45wer

step-by-step explanation:

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: