Which statement is true about the graphs of the two lines y = -4/5x + 2 and y = -5/4x - 1/2 ?

How many zeros does the function f(x)=4x3-x2+1 have

What is the value of x in the following equation. -x ^3/2 = -27

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.