Did i do this right?
find the equation of the axis of symmetry for the parabola
y=x^2-8x+5

used y=ax^2+bx+c and got a=1 b=-8 and c=5

then used the formula x=-b/2a and plugged that in and got x=- -8/2(1) and simplified to get x=4 as the axis of symmetry.

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

If i had 1234 apples and 1 banana what is the total amount