If f(x)=x-5 what is the value of x when f (x)=15

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

The cost of turkey is directly proportional to its weight. if a 12-pount turkey costs $27, how much does a 16-pound turkey cost? a. $33.75 b. $36.00 c. $31.00 d. $32.50