The point q(9, -1) is reflected across the y axis. use arrow notation to describe the original point and its reflection
a) q(9, -1) -> q'(9,1)
b) q(9, -1) -> q(-9, 1)
c) q(9 -1) -> q(-9, -1)
d) q(9 -1) -> q(9, -1)

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)