The a value of a function in the form f(x) = ax2 + bx + c is negative. Which statement must be true?

A. The vertex is a maximum.
B. The y-intercept is negative.
C. The x-intercepts are negative.
D. The axis of symmetry is to the left of zero.

Which is the graph of the piecewise function f(x)? f(x)=[tex]f(x) = \left \{ {{-x+1, x\leq 0 } \atop {x+1, x\ \textgreater \ 0}} \right.[/tex]

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2