Zinc roofing weighs 1.6 pounds per square foot. jose wants to order 357.85 square feet of roofing. before ordering, he calculates how much weight that will put on his roof. his calculation is shown below.

357.85 times 1.6 = 214710. 214710 + 35785 = 178.925

why is his answer incorrect?
he did not line up the decimal points in the factors.
he put the decimal point in the answer in the wrong place.
he did not use a placeholder when multiplying by one.
he did not multiply 6 by 357.85 correctly.

If f(x) = 3-2x and g(x) =1/x+5 to what is the value (f/g)(8)

Will gve pints stars and brainliest

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297