A formula for the volume of a sphere is V = 4/3 pi r³. The volume of the sphere shown is 800 cubic inches. What is the approximate value of r, the radius of the sphere, in inches? A. 5.76
B. 14.96
C. 21.87
D. 63.66

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Natasha spent 1 1/2 hours on the beach. she fell asleep for 3/4 of the time she was on the beach and then woke up with a terrible sunburn.how many hours was natasha asleep on the beach?

1. are the triangles similar and if so why? what is the value of x? show your work.

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?