Will mark as brainliest if answer is correct Which describes the graph of y=(x-4)^2-1?

A. Opens down with a vertex at (-4,-1)

B. Opens up with a vertex at (-4,-1)

C. Opens up with a vertex at (4,-1)

D. Opens down with a vertex at (4,-1)

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

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.