Find the exact value of each expression. (a) cot−1(1)

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

3. a sum of $2700 is to be given in the form of 63 prizes. if the prize is of either $100 or $25, find the number of prizes of each type.

If a sprinkler waters 1 over 12 of a lawn in 1 over 2 hour, how much time will it take to water the entire lawn? (5 points) 10 hours 6 hours 1 over 6 hour 7 over 12 hour