When you reverse the digits in a certain two-diget number you increase it value by 27. what is the number if the sum of its digits is 5

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

How to simply and write the answer n a whole number

Charlie tosses five coins.what is the probability that all five coins will land tails up.