The mean of a set of four test scores is 79. if three test scores are 77, 79, and 85, what is the fourth test score?
a. 83
b. 81
c. 79
d. 75

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.

In which quadrant does the point lie? write the coordinates of the point. a. quadrant ii; (–2, –4) b. quadrant iii; (2, 4) c. quadrant iii; (–2, –4) d. quadrant iv; (–4, –2)

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume