The standard form would be y = 7x^2 - 42x + 67
The answer is 3√5. You use the distance formula: √((x2-x1)^2+(y2-y1)^2)
This is a linear equation
y=mx+b
y=50x+400 (when x equals the number of hours played)
1000=50x+400
*first, isolate the variable (x)
-50x=-1000+400
*divide by -50 to get x by itself
x=20+8
The answer is x=28
I would pick the third choice because in order to find x, you must multipy your 4.
