36. write an algebraic expression for nine more than three times a number. 37. let t be the time now. Write an expression for the time 2 hours ago.

38. write an algebraic expression for the sum of r and s

39. write an algebraic expression for the following: five times the sum of p and q.

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?

Tan198=asin164=? how to solve this? ?