Someone works in a grocery store and earns $7.20 per hour. The store will pay them an extra 5% per hour if she works on Saturday. If that person works a 5 hour shift on Saturday, how much will she earn for that shift?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)