If a 5 ft tall student is casting a shadow that is 3 ft long, how long will the shadow of a 20 ft tall building be?

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form

The holiday party will cost $160 if 8 people attend. if there are 40 people who attend the party, how much will the holiday party cost