To determine the price (P) in dollars for each necklace she makes, Mei uses this equation: P= 15h + c
If h is the number of hours it takes to make a necklace and c is the cost of the materials, what
price would Mei charge for a necklace that takes 8 hours and $40 in materials to make?

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?