Joe counted a total of 40 white cars and yellow cars. there are 9 times as many white cars as yellow cars. how many white cars did joe count

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Apack of gum would be considered a(n) necessity luxury item small ticket item unaccountable expense

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?