the amount of sales tax varies directly with the cost of the purchase if the sales tax is 2.40 on a purchase of 40.00 what would be the sales tax on a purchase of 60.50

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

You can find the constant of proportionality by finding the ratio of

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15