Shaun and trudy are selling raffle tickets. so far, shaun has sold x tickets. trudy has sold 3 more tickets than half the number of tickets that shaun sold. which expression represents the number of raffle tickets that shaun and trudy have sold altogether?

For the function, f(x) = -5x 2, find f(-4).

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.