For the function `f(x)=5x^2-7x`, what is the value of `f(-3)`?

If f (x) =2x ^(2) -5x +7, what is the value of f (8) -f (3) ?

For the function f, f(x)=x^2-4x+7 , show that f '(5)= 2f'(7/2) .

If f(x)=5x^2 -3 and f(x+a)=5x^2 + 30x + 42 , what is the value of a ?

For the function f,f(x)=x^(2)-4x+7, show that f'(5)=2f'((7)/(2))

Find out at which points on the curve y=f(x)=3x^(5)-5x^(3)+5x-7 , the rate of change of the function f(x) is minimal . What is the value of the rate of change ?

If f(x)=tanx+e^(-2x)-7x^(3) . Then what is the value of f'(0) ?

f ( x) = (3)/(2) x + b In the function above , b is a constant . If f (6) = 7 , what is the value of f ( -2 ) ?

If f is a linear function such that f(7)=5,f(12)=-6, and f(x)=23.7, what is the value of x?

IF f(x) = tan x+e^(-2x)-7x^(3) , then what is the value of f'(0)?