It would take greater than 31.25 hours for Tim's price to be better. So in terms of whole hours it would take at least 32 hours of work for Tim's price to be better.
Answer:
it's 5
Step-by-step explanation:
Answer:
A. Two solutions
Step-by-step explanation:
y=6x−1
4x+4=6x−1
4x+4+−6x=6x−1+−6x(Add -6x to both sides)
−2x+4=−1
−2x+4+−4=−1+−4(Add -4 to both sides)
−2x=−5
−2x
−2
=
−5
−2
(Divide both sides by -2)
x=
5
2
Step: Substitute
5
2
for x in y=4x+4:
y=4x+4
y=4(
5
2
)+4
y=14(Simplify both sides of the equation)
The z-score is given by:
z-score=(x-μ)/σ
where:
x=score
μ=mean=22.5
σ=std deviation=5.1
given that the z-score is -2, then the lowest cost will be:
-2=(x-22.5)/5.1
solving for x we get:
-10.2=x-22.5
x=-10.2+22.5
x=12.3
therefor the lowest score is 12.3
Given that the z-score is 2 when the score is highest, then highest score will be:
2=(x-22.5)/5.1
10.2=x-22.5
x=10.2+22.5
x=32.7
therefore the highest score is 32.7
