Mathematics

What is (-5)2 ?

What is (-5)?

  1. (-25)2
  2. -25
  3. 5
  4. 25

Answer: 25 is correct. In this situation you address the parenthesis and then the exponent, and the negatives would cancel each other out for a positive answer.

What is x2x4?

What is  x2x?

  1. x8
  2. x6
  3. 2(x8)
  4. 2x6

Answer: x6 is correct because you add the exponents, 2+4

Lance makes $11.35 an hour and earns time and a half pay for every hour over 40. If Lance worked 47 hours this week, about how much will his paycheck be? Round to the hundredth place.

Lance makes $11.35 an hour and earns time and a half pay for every hour over 40. If Lance worked 47 hours this week, about how much will his paycheck be? Round to the hundredth place.

  1. $546.24
  2. $454
  3. $573.18
  4. $521.37

Answer: $573.18 is correct because $11.35 an hour x 40  hours a week equals $454. Time and a half pay for Lance would be $17.025 and you figure that out by multiplying $11.35 an hour by 1.5. Then multiply $17.025 times 7 overtime hours to get $119.175. Lastly, add $454 and $119.175 and you will get $573.175. Rounded to the hundredth place would be $573.18.