The table and graph show the miles driven and gas used for two scooters. Scooter B Scooter A Distance (mi), x Gas used (gal), y 150 2 5 300 4. Gas used (gal) 450 6 2 600 8 750 10 0 90 270 450 Distance (mi) 9. Which scooter uses fewer gallons of gas when 1350 miles are driven? 10. Are gas used and miles proportional or nonproportional for each scooter? I

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in