Which equation can be used to find the perimeter of a regular pentagon with side of length 6 m

a. p=5+6
b. p=6/5
c. p=5(6)
d. p=2(5)+2(6)

Asystem of equation is shown below 6x - 2y equals 3 . and 5x + 3y equals 4. would you solve by substitution or elimination? and why

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?