The constant of proportionality of y=7.25x is 7.25.
It would be 104? I don’t understand the question but I guessing you’re adding
First one (20 characters) hope this helped
Is the equation2x2(9x+2-16) if so you would do -16+2 first which is -14
Then multiply 2x2 equals 4
4(9x-14)
Multiply the 4 to 9x and -14
You get 36x-56