What is the equation of the quadratic function represented by this table x=5 and f(x) = -4

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation. which method should jeremy use?

The graph below shows the line of best fit for data collected on the number of cell phones in cell phone cases sold at the local electronic store on four different days

The price of a lawn mower is x dollars. the store is having a 75% end of summer clearance sale. which expression can be used to find the clearance price of the mower? a) .25x b) .75x c) x - .25(75) d) x + .25(75)