When 2x^2+x+c is divided by x+k, the quotient is 2x+5 and the remainder is 7. Find c and k. a. k = 1, c = -3

b. k = -5, c = -6

c. k = 2, c = 3

d. k = -2, c = -3

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.