# Tutor profile: Jonathan B.

## Questions

### Subject: Biology

Which structure does NOT play a part in the motion of cells? a) microvilli b) cilia c) flagella d) pseudopodia

ANSWER: A -- MICROVILLI

### Subject: Calculus

Find $$f'(x)$$ (the derivative of f(x)) if $$f(x) = 7x^3 - 2x^2 + 4x - 5$$.

The derivative of a polynomial equation can be found by multiplying the exponent of the variable by the coefficient of each term, then by reducing the exponent of the variable by one. Answer: $$21x^2 - 4x + 4$$

### Subject: Algebra

Solve the equation $$5(- 3x - 2) - (x - 3) = -4(4x + 5) + 13$$

Detailed solutions to algebra problems are presented. Solution to Problem : Given the equation $$5 (- 3 x - 2) - (x - 3) = - 4 (4 x + 5) + 13$$ Multiply factors. $$-15 x - 10 - x + 3 = - 16 x - 20 + 13$$ Group like terms. $$- 16 x - 7 = - 16 x - 7$$ Add 16x + 7 to both sides and write the equation as follows $$0 = 0$$ The above statement is true for all values of x and therefore all real numbers are solutions to the given equation.

## Contact tutor

needs and Jonathan will reply soon.