Which answer describes the calculations that could be used to solve this problem? mike bought 7 tickets for the baseball game. each ticket cost $8. he gave the cashier a $100 bill. how much change would mike get? a. add $8 + 7. then subtract the sum from $100. b. multiply $100 × 7. then add $8 to the product. c. divide $100 ÷ 7. then add 8 to the quotient. d. multiply 7 × $8. then subtract the product from $100

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

i dony know

step-by-step explanation: