What is three more than twice a number k?
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14 pointslet x be the seats in the small van and y the seats in the large van. how many seats does the large van have? a company uses two vans to transport worker from a free parking lot to the workplace between 7: 00 and 9: 00a. m. one van has 9 more seats than the other. the smaller van makes two trips every morning while the larger one makes only one trip. the two vans can transport 69 people, maximum. how many seats does the larger van have?

Can someone me with this problem i don't understand i need

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?