What is the axis of symmetry for f(x)=- 3x^ 2 +18x-7? x=-3 x=3 x=-6 x=6

It costs 4.25 for 1 pound of roast beef. how much will it cost to purchase 2.5 pounds of roast beef? round to nearest cent

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons