Answer:
D. The graphs of the equations intersect each other at two places.
Step-by-step explanation:
The definition of a solution of a system of two equations in two variables is a point where the graphs intersect. A system of equations having graphs that intersect each other will have as many solutions as there are intersection points. If the graphs intersect in two places, there will be two solutions.
Pretty simple. He needed 6.7 gallons to fill the tank. At 3.80/gallon, he spent $25.46
Do 40 times 12 because if she can type 40 words each minute and there is 12 minutes then it would be 480
$4 / 8 = 50 cents per pen
.5 * 5 = 2.50
.5 * 3 = 1.50
Ivan pays $2.50 and Jeff pays $1.50