At hockey practice, Coach Taylor always sets aside 80% of total time for game play. The rest of the practice is spent on the warm up. At practice yesterday, players spent 72 minutes on game play. The players want to know the total practice time. NEED HELP ANSWER ASAP PLS> GIVING POINTS AND BRAINLIEST!!!

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

Answer question above and explain each step : )

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?