Perform the following polynomial multiplication (x2 + 9x + 4)(3x2 + 8x + 5)

Talia took the bus from her home to the bank and then walked back to her home along the same route. the bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. to determine the time, x, that it took talia to walk home, she used the equation 40(0.9 – x) = 5x. the time of trip 2 is hours. the distance of trip 1 is km.

Write a function rule for  “the output is  5 less than the input.” let  xx  be the input and let  yy  be the output.

Which number is composite a.9 b.5 c.11 d.2