Find the average rate of change between f(-4) and f(-1) in the function f(x)=x^2+2x-8

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.