14. If the mZ1 = 3x - 40 and the mZ8 = x + 60, write an equation, solve for x, and find the mZ1 and the m28.
15. If the m3 = 4x + 11 and the m25 = 14x - 29, write and equation, solve for x and find the
m3 and the m 25.

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.