Solve the system of equations by substitution. -7x + y=-20

3x + 5y = 14

A) (-8, -1)
C) (8.1)
B) (3, 1)
D) (3,-1)

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?

Which expression gives you the distance between the points (5,1)and(9,-6)

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min if they did not stop driving, how many miles could kyle and elijah drive in a whole day? ? 1 day = 24 hours. plzzz i will give you 100 points