Use the given values to write an equation relating x, y, and z given that z varies jointly with x and y. Then find z when x = 4 and y = 6
x = 3, y = 2, z = 24

I need help please

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

Which graph represents the given linear function 4x+2y=3