A sign says that the price marked on all music equipment is 30% off the original price. You buy an electric guitar for the sale price of $315. What is the original price? Ms. Artemus claims the original price is $450. Show your work and explain how she arrived at that answer. please ill give brainliest to who ever shows their work thank you.

the answer is 15% decrease

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:

step-by-step explanation:

left be aligning the decimal points is required to not required see the number of digits to the right

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step-by-step explanation: