Mai earns $7 per hour mowing her neighbors lawns. she also earns $14 for hauling away bags of recyclables for some neigbors. priya babysits her neigbors children. the table shows the amount of monet m she earnd in h hours. priya and mai have agreed to go to the movies the weekend after they have earned the same amount of money for the same number of work hours. how many hours do theyhave to work before they go to the movies?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

The weight of a full steel bead tire is approximately 800 grams, while a fighter wheel weighs only 700 grams. what is the weight of each tire in pounds?

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)