Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Linear algebra wikipedia , lookup
Cubic function wikipedia , lookup
Quartic function wikipedia , lookup
Quadratic equation wikipedia , lookup
Elementary algebra wikipedia , lookup
System of polynomial equations wikipedia , lookup
System of linear equations wikipedia , lookup
Algebra 2 In-Class Systems Review 1. Mikayla's mom is trying to decide between two plumber companies to fix her sink. The first company charges $50 for a service call, plus an additional $36 per hour for labor. The second company charges $35 for a service call, plus an aditional $39 per hour. a) After how many hours will the two companies charge the same amount of money? Answer: 5 hours b) How much money will they charge at this time? Answer $230 2. Suppose Stacey's mom invests $10,000, part at 3% and the rest at 2.5%, in interest bearing accounts. The total yearly investment (interest) is $283. How much did Lindsay's mom invest at each rate? Answer: $6600 @ 3% and $3400 @ 2.5% 3. Solve using any method a) -6w-8z=-44 +6z=36 Answer: (-2,7) b) x+5y= 3 3x-2y= -8 Answer (-2,1) 4. Consider the equation 3x+2y=6. If possible, find a second linear equation to create a system of equations that has the following solutions. a) No Solution b) exactly one solution c) Infinite solutions Answers: a) equation with same slope different intercept b)equation with different slope c) same equation Algebra 2 In-Class Systems Review