How many terms are in the expression x^2+3x-2

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

What is the value of f(x) = 2.2 for f(-2)?

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities