At a local pizza place, the cost for 3 small pizzas and 3 medium pizzas is $51. The cost for 5 small pizzas and 2 medium pizzas is $55.
Find the cost of each pizza

X= cost of a small pizza
Y=cost of a medium pizza

Write a Systems of equations to solve this problem

A. 3x+ 3y = 51
2x + 5y = 55

B. x+ y = 51
3x + 3y = 51

C. 3x + 3y = 51
5x + 2y = 55

D. x + y = 51
5x + 2y = 55

. + λrh() e 1 1 2 4 4 4 4 4 3 4 4 4 4 4 + th−1(− s(x)2 dx ω + λrh−1() e 2 1 2 4 4

step-by-step explanation:

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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:

a

step-by-step explanation: