Kenny ordered guitar strings for glenn’s guitar shop. the premium guitar strings are $4.50 apiece. the standard guitar strings are $1.50 apiece. the bill smeared in the rain, but kenny knows he ordered a total of 80 strings for $225. kenny wants to solve for the number of each type of string, so he represents variables as shown. let x = the number of premium strings. let y = the number of standard strings.

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?

Which of the following graphs could represent a quartic function?

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.