The value of a professional basketball player's autograph rose 20% in the last year. it is now worth $264.00. what was it worth a year ago? a. $210.00 b. $230.00 c. $220.00 d. $200.00 15 points me no

the price increase by 20 percent so the new price is the old price plus the increase

original price + original price *20 percent = new price

x +x*.2 = 264

factor out x

x(1+.2) = 264

x(1.2) = 264

divide by 1.2

x = 264/1.2

x=220

The original price is 220.

Choice C

sine

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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