If d varies directly as t and d = 150 when t = 3 find d when t = 5

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.