18
There is no way to know unless you had an equation that gives the relationship between x and y. For example, if y=2x, then when x equals 99 or x equals 100, then the value of y has a difference of 2.
99
(6 + y)/ 5= 21 Multiply both sides by 5: 6 + y = 105 Subtract 6 from both sides: y = 99
a = 3 and y = 0
3 times 33 equals 99.
y is a sum of constants and so is itself a constant. Its derivative is, therefore, zero.
This equals 198.
-99
y=9x=3it equals ......y= 3.334
x equals y
198/2 = 99
y=9