Solve each system of equations algebraically

x+y=-3

y=x+3

Sam ate 1/3 of the Halloween candy. Tim ate 2/5 of the Halloween candy. How much candy us left

What is the root of the quadratic equation x^2 - 12x + 36 = 0

Y = 89.5 + 0.409x Is a line of regression corresponding to a set of data which compares. The number of commuters to number of paelinf spots at a given station. The Metro-North Station of Greenwich, CT, has 2804 commuters.

A piece of blue yarn is 7 2/10 yards long. A piece of pink yarn is 6 times as long as the blue yarn. What is the total length of the blue and pink yarn?

A library expansion begun in 2002, was expected to cost $107 million. By 2006 library officials estimated the cost would be $34 million over budget. By what percent did the actual cost exceed the initial estimate?

A bottle of soda contains 390 mL. a) How many milliliters are contained in a four-bottle carton? b) How many liters does the amount in part (a) equal? c) At $2.25 for the carton of soda, what is its cost per liter?

Why does an even number plus an odd number always equals an odd number?

Alex collects stamps. He wants to buy a superhero set for $3.88, a president set for $5.88, and a dinosaur set for $3.88. He has $15 to spend on stamps.

When changing a percent to the equivalent decimal you drop the percent sign and then

Finish solving the system of equations - 9.5x - 2.5y = - 4.3 and 7x + 2.5y = 0.8 using the linear combination method. 1. Determine which variable will be eliminated: y will be eliminated because - 2.5y and 2.5y are opposite terms. 2.