9x+12y=136
i have to solve for x and y

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.

Amayoral candidate would like to know her residents’ views on a public open space before the mayoral debates. she asks only the people in her office. her co-workers are an example of a census population convenience sample simple random sample