-x -20 = 4x - 5 please help fast and dont just write anything for point i actually need help fast
i will give 25 points

The cost c, in dollars, for bananas depends on the weight w,in pounds, of the bananas. this situation is represented by the function rule c=0.5w (graph each function rule.tell whether the graph is continuous or discrete)

Find the zeros of the function. write the smaller solution first, and the larger solution second f(x)= (x+6)^2-49

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?