Answer:
yes
Step-by-step explanation:
Find the amount of the sales tax:
46 x 0.06 = 2.76
Add the sales tax to the items total:
46 + 2.76 = 48.76
50 > 48.76
Since $48.76 is less than $50 he has enough money
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Answer: b. false
Step-by-step explanation:
The least-square regression line has a slope of:
m=(nΣxy-ΣyΣx)/(nΣx²-ΣxΣx)
and a y-intercept of:
b=(Σy-mΣx)/n
In this case: n=7, Σxy=4899, Σy=391, Σx=85, Σx²=1153 so
m=(7(4899)-391*85)/(7(1153)-85*85))=1058/846
b=(391*846-85*1058)/(7*846)=34408/846
So the line of best fit is:
y=(1058x+34408)/846 and if we approximated this as your answers see to have done....
y=1.25x+40.67
