What is the answer to the pizzazz book C40?

What is the value of k when the line y equals 3x plus 1 is a tangent to the curve of y2 plus x2 equals k? What is 13.274 rounded to the nearest tenth? What is the number 162 in roman numerals? How do you calculate the perimeter with known volume? How many cm in 8.4m? What is the sequence 77 66 57? How would you write 7.12 cm as a fraction? Calculate the atomic mass of neon-20? How do you simplify 3(x-6) (4x 12)-6x? What is 10490 in roman numerals? Is median the average? What is 16 plus negative 4? In a survey at a supermarket 4 over 5 of people surveyed said they shopped more than once a week what percent of people shop more than once a week? What is 32 percent of 26? What is the probability of drawing a king or a 2 from a deck of 52 cards? How do you write 4995 in expanded form? What is full scale accuracy? How do you express the square root of forty as an irrational number? Mg to gram? What is 165 times 0.4?