Acarpenter uses 9 1/2 ft of cedar for every 5 2/3 ft of redwood. a) if the carpenter uses 4 3/4 of cedar, how much redwood does he need?

These question are hard can you me with answers

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?

Which of the following is true for the relation f(x)=2x^2+1