1. Consider the function R(x) where R is a function whose domain is all x, such that x > 0. R(x) rounds x up to the nearest integer. [4 points]

(a) Evaluate each of the following:
6
R(3.15) = 3
5
R(1.01) = 1
4
R(5) = 5
3
2
(b) Graph R(x) on the grid to the right
1
1 2 3 4 5
6

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

Atechnician compares repair costs for two types of microwave ovens (type i and type ii). he believes that the repair cost for type i ovens is greater than the repair cost for type ii ovens. a sample of 6767 type i ovens has a mean repair cost of $79.79$⁢79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$⁢19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$⁢75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$⁢21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let μ1μ1 be the true mean repair cost for type i ovens and μ2μ2 be the true mean repair cost for type ii ovens. step 2 of 4 : compute the value of the test statistic. round your answer to two decimal places.