How do you solve this system by elimination?

-3x+4y=12

2x+y=-8

I dont know how to solve it.

What do you notice about slopes with no number

Talia works 6 hours per day on Fridays and Saturdays each week. She earns $8.20 per hourwhat is her gross pay in a wek? a. $8.20B. $16.40C. $49.20D. $98.40Mikey worked 8 hours on Wednesday, 6 hours on Thursday and 7 hours on Friday.

7. Find the product (3x + 2) (4x2 - 5x + 7).

What is the greatest common factor of 15abc^2 and 25a^3bc?

Bill earns $12 per hour and works at most 40 hours per week. Identify the independent and dependent quantity in the situation, and find reasonable domain and range values.

You have enough wallpaper to cover 240 square feet. If your walls are 8 feet high, what wall length can you paper?

How to solve 29+d=54; 24,25,26

Alisa had 1/2 a liter of juice in a bottle. She drank 3/4 of the juice that was in the bottle. How many liters of juice did she drink?

An animal shelter spends $5.50 per day to care for each bird and $7.00 per day to care for each cat. Gianna noticed that the shelter spent $217.00 caring for birds and cats on Friday.

Find the following product 4x+5 (4x-5)