Find the sum of the constants $a$, $h$, and $k$ such that \[2x^2 - 8x + 7 = a(x - h)^2 + k\] for all real numbers $x$.

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'