Vance sells between 300 and 310 items at a convention. he pays a one time $450 fee, and earns $15 commission for each item that he sells. the function p(i)=15i−450 represents vance's convention earnings as a function of items sold. what is the practical domain of the function?

What is the y-intercept of the graph of the equation y=3(2^x)

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'