Bill can hammer 20 nails in 6 minutes. jeff can do the same job in only 5 minutes. how long will it take them to finnish if bill hammers the first 5 nails, then jeff hammers for 3 minutes, then bill finishes the job?

∠cbe and ∠deb are same-side interior angles.

i took the test

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x