A hot-air balloon rises at a constant rate. The table below models f(x), the balloon’s altitude in feet, in relation to x, the number of minutes the balloon has been rising. x 2 5 8 11 f(x) 550 1,375 2,200 3,025 What is the rate of change in the balloon’s altitude with respect to time?

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?