Need help plz asap im hoping on an answer quick thank you <3

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

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)

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c