Asales associate earned a commission of $26.40 for sales totaling $220.00.
which proportion could be used to find the commission amount for sales totaling $515.00?
a, x/26.4 = 220/515
b, 26.4/220 = 515/x
c, 26.4 = z/515
d, 220/x = 26.4/515

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

Question 5 spring semester final exam math evaluate

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.