To get an a in a course, you must have an average of at least 90% on four tests worth 100 points each. your scores on the first three tests were 89, 92, and 81. what must you score on the fourth test to get an a in the course?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

F(x) = x2 − 9, and g(x) = x − 3 f(x) = x2 − 4x + 3, and g(x) = x − 3 f(x) = x2 + 4x − 5, and g(x) = x − 1 f(x) = x2 − 16, and g(x) = x − 4 h(x) = x + 5 arrowright h(x) = x + 3 arrowright h(x) = x + 4 arrowright h(x) = x − 1 arrowright

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?