During the past year, Mrs. Singh purchased 38 books at a wholesale club store. She purchased softcover books for $4.50 each and hardcover books for $10.50 each. The total cost of the books was $255.00 . How many of each type of book did she purchase?

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47

i dont know men

step-by-step explanation:

the answer on ed. is:

c. "the graph of f(x) has exactly two x-intercepts."

hope i could someone! : )