Researchers count 30 tagged zebras and 150 total zebras in an area of a game reserve. if researchers had previously tagged 80 total zebras at the game reserve, about how many total zebras live at the game reserve? write a proportion to extimate the total population.

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Write the expression 7x^3-28xy^2 as the product of 3 factors