Write the function in vertex form. (show each step)

h(x) = -2x^2 + 7x

Simplify the expression. enter the correct answer.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.