Solve the system by the substitution method.

X+Y=-3

Y=-4x

Solve 2 (25^x) = 3 - 5^x

Warren has track practice every afternoon on Monday he will run a total of 12 laps around the track each lap measures 400 meters if one has land 2880 so far what percent of the total distance has he completed

a pound of popcorn is popped for a class party. The popped corn is put into small popcorn boxes that each hold 130 popped kernels. There are 1450 kernels in a pound of unpopped popcorn.

What is 5.40 as a fraction in simplest form

Beth wants to make exactly 60 blueberry muffins. Each batch makes 6 muffins, She has already made 2.5 batches. How many more batches of blueberry muffins does Beth need to make?

In a box of tickets, there are 50 blue tickets and 15 red tickets. after a certain number of red tickets are added to the box, the probability of randomly choosing a red ticket is 2/3. how many red tickets were added to the box?

The perimeter of a rectangle is 68 feet. Find the dimensions of the rectangle if the ratio of the length to the width is 9:8.

What is 0.8 to the power of 2

500 decreased by 55% =

The table below shows the lengths and weights of six dolphins at an aquarium. Use the data from Pax and Snowflake to create a linear model that predicts the weight (y) of a dolphin given its length (X).