Solve the system using substitution or elimination

2x-y=4

-3x+y=-2

Jason spent half of his allowance going to the movies. He washed the family car and earned seven dollars. What is his weekly allowance if he ended with thirteen dollar?

Using R, answer the following question. The accompanying data set contains quiz scores for 12 students in a chemistry class: 18, 15, 5, 8, 15, 20, 2, 16, 10, 12, 20, 15.

What is 257 divisible by

Izzy had an 82 and an 88 on his first two tests and believed that he did well enough on his final exam to keep his B average. However, when he got his grade he received a D.

A company recorded 2 days of accrued salaries of $2,200 for its employees on January 31. On February 9, it paid its employees $8,600 for these accrued salaries and for other salaries earned through February 9.

Which expressions are 3x+3 (x+y)

What is the next term in the sequence below? -324,108,-36,12 ... a) - 4 b) - 3 c) 3 d) 4

There are 5 slices of pepperoni pizza, 1 slice of sausage pizzá, and 3 slices of cheese pizza left at the pizza party. Without looking, Amy took a slice of pizza, ate it, and then took another slice.

Factorize 27x^3-16y^3

How to find fractions between a pair of fractions?