21. Reginald Wallace's is paid $21.40 per hour. Last week he worked 40 hours regular time and 8 hours overtime and 5 hours double time. His weekly federal withholding is $63.79, The Social Security tax is 6.2% of the first
$97.500. The Medicare tax is 1.45% of gross pay. The state tax is 1.5% of gross pay. Each week he pays $12.40
for medical insurance, $15.00 for Union dues. What does Reginald get to take home?
$1920.69
$1.134.11
$1,073.65
$1717.69

How many days was the temperature above 90 degrees?

With finding limits of multi variable !

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.