I really don't understand these two equations to find y.

1. 2y+3x=-6.

2. x+0.25y=1.5

The price of an item has dropped to $42 today. Yesterday it was $105 . Find the percentage decrease

For every $20 you earn, you donate $3 to charity. The equation d=3/20 e models the relationship between the amount earned in the dollars and the amount donated in dollars. Determine the amount you earned in dollars if you donated $90 to charity.

A packages of 4 mechanical pencils comes with 2 free erasers. If you get the total of 12 free erasers, how many packages of pencils did you buy?

0.270 is greater than, less than or equal to 0.273

1. Choose the correct simplification of the expression - 5x2 (4x - 6x2 - 3). 30x4 - 20x3 + 15x2 -11x4 - x3 - 8x2 -30x4 + 20x3 - 15x2 30x4 + 20x3 + 15x2 2. Simplify (6x2 - 3 + 5x3) - (4x3 - 2x2 - 16).

38 is 95% of what number

What is 1.892 to the nearest tenth?

Write the percent as a decimal. 110%

What is the solution to the inequality? - 3x < 24

Rene is going to the lake to visit some friends. If the lake is 60 miles away, and Rene is driving at 40 miles per hour the entire time, how long will it take her to get to the lake? a) 50 minutes b) 70 minutes c) 90 minutes d) 110 minutes