A quality control technician samples circuit boards and records the number that are defective. Of 240 boards sampled, 8 are found to be defective. The technician reports that 30% of the boards are defective, based on the following work: Which best explains any error the technician may have made?

- There is no error. The technician’s calculations are correct.
- The technician divided in an incorrect order.
- The technician did not convert the answer to a decimal.
- The technician’s sample was not large enough to convert to a percentage.
- The technician did not multiply the answer by 100 to convert it to a percentage.

answer: a and b

step-by-step explanation:

answer: i wpould go with c

step-by-step explanation:

you are playing an adventure game on your computer. you come across a troll who won't let you pass and there is no other way to get to the other side of the river except over the bridge he is guarding.

the troll is a nerd. he takes great delight in watching people struggle with his problems. very few get them. he only gives you one chance and then he changes the puzzle. you have to solve this one.

before you are four blocks. they are numbered 11,6, -7,21.

he tells that the answer he wants is minus and between -1 and - 2. you can use +, -, ×, ÷   ( and ) as many times as you like or no times at all. you don't like the way he's looking at you, but you need to cross the bridge. what do you do?