At a local store, 1 pencil and 3 rulers cost $5.75, whereas 5 pencils and 3 rulers cost $7.75. What is the cost of one pencil and one ruler

X+y=-4 x-y=2 use elimination with adding and subtraction

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.