Y = f(x) + k
The k on the function will translate the function up or down.
If k is positive, it will translate up.
If k is negative, it will translate down.
Inequalities will have a <, >, <=, =>, = or will be worded as "Less than", "greater than", etc.
Equations must have mathematical functions and equal sign.
15=3x is an equation since 3x = 3*x
Finally, expressions are mathematical functions that have no equal signs.
Answer I think it is c I hope that right I am sorry for late responds
9 i’m pretty sure bc if u do the square root of 87 and round it to the nearest whole number u get 9
Second answe is the correct answer