What is the value of 35−3m , when m = 4?

a. 1
b. 13
c. 23
d. 128

Iam so stuck. what is the worked out answer for this question?

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?