4) There are 3 towns P, Q, R in a large city. The towns are connected by roads forming a triangle. The distance from P to Q is 6 km and Q to R9 km. Find the
distance between P and R..
OA) 6.71 km
OB) 8.92 km
C) 10.18 km
OD) 10.81 km
HELPPP ASAPP

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.