Joey enter the hot dog eating competition. he ate 30 1 / 2 hot dogs and 3 3 / 4 minutes. how many hot dogs did he eat in one minute? write your answer as a mixed number.

Twelve less than a number is at most 20

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅