Two secant segments intersect outside a circle as shown. what is the value of x?

Me what is the value of x? showing work would be appreciated - ! : )

At a lunchron, guests are offered a selection of five different grilled vegetables and four different meats. in how many waya could one choose three vegetables and two meats?

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day