Amanufacturer of rubber balls estimates that 3 out of 500 balls produced are defective. the manufacturer produces 100,000 balls each week. predict the number of rubber balls that are not defective each week.

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

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?