12. The table shows the amount of time four students practiced the trumpet one day. Trumpet Practice Times
Name
Time
(hours)
Cole
Gus
Ryan
Jacob
1 1/2 금
Which list shows the names of the students in order from the least amount of practice time to the greatest
amount of practice time?
1 Pt
a. Ryan, Jacob, Cole, Gus
c. Ryan, Gus, Jacob, Cole
A B С D
b. Cole, Jacob, Gus, Ryan
d. Gus, Ryan, Cole, Jacob

y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.

susie has 7 apples

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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