A repairman says the cost in dollars to hire his services for x hours is 20(3 + 4x). a. How much would it cost to hire him for 1 hour? b. Expand the expression he has given you. c Hence, state: i his call-out fee ii the amount he charges per hour.

"princess tower" in dubai is considered the world's tallest residential building, towering to 1 0 1 101 floors! t ( n ) t(n) models the number of tenants living on floor n n of the tower. what does the statement t ( 2 0 ) = t ( c ) t(20)=t(c) mean?

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Simplify the expression 10/11(22z) + (a+5) -1