In a geometric sequence each term is positive, the first term is 4 and the third term is 9. What is the sum of the first four terms?

Give the functions f(x) = |x + 2| - 3, what is the domain? a,b,c, or d all real numbers x > 2 x < -2 all real numbers and x cannot equal to 2

Adoughnut shop charges $0.50 for each doughnut and $1 for a carryout box. shirley has $10 to spend. which inequality can be used to find d, the number of doughnuts she could have bought if she also wants them in one carryout box?

Which angle is the smallest? also give me an explanation so i can complete it to other questions as well, : )