If tanФ= -4/3 in quadrant 2, what is cosФ?

A. - 4/5
B. 4/5
C. 3/5
D. -3/5

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

What is the value of x when x + 7 = 21?

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)