Devon is buying 3 greeting cards that cost $0.97 each. How can rounding be used to estimate the total cost of the cards? Since each card is about $1, the total cost is approximately 3 + 1 = $4. Since each card is about $1, the total cost is approximately 3 × 1 = $3. Since he is buying about 10 cards, the total cost is approximately 10 × 0.97 = $9.70. Since he is buying about 10 cards, the total cost is approximately 10 + 0.97 = $10.97.

Plz need answer now will mark which situations represent linear functions? check all that apply. a)the temperature rises and falls over the course of a day. temperature is a function of time. b)a baseball is hit into the outfield. the height of the ball is a function of time. c)a car goes 55 mph on the highway. distance is a function of time. d)a child grew 2 inches this year and 1 inch last year. height is a function of time. e)a movie director makes 2 movies per year. the number of movies is a function of the years.

Solve the equation x/4 - 5= -8 -27 -12 -7 12

If the value of cos330°is√3/2 then find cos 165°.