Solve the following system by the substitution method

2x+y=4

y+2x

Your local gas stations are having a price war. During the past 7 days they have lowered the price of regular gas by $0.02. Define a variable. Then write and solve an equation to find the total change in gas price. Show your work.

How many days would it take a $6,000 loan to earn $500 ordinary interest at 12% interest rate? 250 days 180 days 210 days 235 days

Of the 1640 students in rolled at school 50% come to school by bus 35% come by car and the rest of the students walk to school how many students of the school

How does or what does a organism gain from having a stem cell

Complete the question: 336=54 + 29 + p find what p is. Then, explain your answer

Find the surface area of a rectangle height is 9 in width is 7 in length is 16 in

A soup kitchen makes 15 gallons of soup each day a quarter of the soup is served and the rest is saved for the next day, what is the number of ounces left after each day

Last season, a baseball player scored 14 runs in 18 games. this season, the baseball player scored 12 runs in 15 games. Find the number of runs scored per game in each season. round your answer to the nearest hundredth.

What property should be initially applied to simplify the expression (4a + 4b) + (2b - c) + 5c?

Which is the cheapest per ounce: a 2-L bottle (67.6 oz.) of root beer at $1.49, a six-pack of 20-oz. bottles at $2.49, or a twelve-pack of 12-oz. cans at $2.99?