1.) the sum of two numbers is 34. the difference between twice the first number and three times the second number is 7. what are the two numbers?

2.) the difference of two numbers is 3. three times one number is the same as 4 times the other number. what are the two numbers?

Asphere has a diameter of 10 in. what is the volume of the sphere?

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

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.