The 5 hour energy drink should keep a person feeling awake while driving for 5 hours, regardless of their age. stacy just doesn't believe it. so she has 50 twenty year olds, 50 thirty year olds, 50 forty year olds, and 50 fifty year olds consume a 5 hour energy drink, and then stacy measured participants' awakeness after 5 hours of driving. what test should she use to analyze her results?

a.   Single-sample Z-Test

b.   Single-sample t-test

c.   Independent-measures t-test

d.   Repeated-measures t-test (Paired-samples t-test)

e.   Independent-measures ANOVA

answer: what do you mean

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.