Problem
Which of the following pizzas is a better buy: a large pizza with 16-inch diameter for \$15 or a medium pizza with an 8-inch diameter for \$7.50? What is the cost per square inch of the better pizza?
| A. medium pizza: \$0.07/in.2 | C. medium pizza: \$0.15/in.2 |
| B. large pizza: \$0.07/in.2 | D. large pizza: \$0.15/in.2 |
Problem
Given the following equations:
$$ab = 1/8 \qquad ac = 3 \qquad bc = 6$$
Find the value of $a + b + c$.
| A. $12$ | C. $\dfrac{4}{51}$ |
| B. $\dfrac{7}{16}$ | D. $12.75$ |
A timber was planned to be use as a floor beam to support the loads shown. The section was initially designed to have the dimensions shown. For timber its flexural stress is limited to 27.6 mPa. Is the initial design enough to support the load? If not what should be its depth “d”, if the architect wished to maintain the breadth “b” of 100mm?
Questions:
Problem
Which of the following is the derivative with respect to x of $(x + 1)^3 - x^3$?
| A. 6x + 3 | C. 1 + 2x - 3x2 |
| B. 3x2 + 2x + 1 | D. 6x - 3 |
