Xit 5-3: MathXL for School: Practice & Problem Solving
Assignment is past due (01/10/22 11:59
5.3.PS-16
Question Help
Challenge A cell phone plan costs $22.90 per month for 500 minutes of talk time. It costs an
additional $0.06 per minute for each minute over 500 minutes. To get e-mail access, it costs 30% of
the price for 500 minutes of talk time. Your bill, which includes e-mail, is the same each month for 5
months. The total cost for all 5 months is $175.25. Write and solve an equation to find the number of
minutes of talk time you use each month.

the answer is:

engaging in a sit-in, in which african americans stay at a segregated business.

so then what are you asking?

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: