Solve the system of equations by the substitution method.

x+y=4

y=-3x

What are some advantages of displaying the relationship between two quantities using a qualitative graph?

The equation y=1125 (1.034) ^x can be used to approximate the number of cell phone users who live in a certain city over time, where a represents the number of years after 2000.

Recycling Center A processes aluminum at a rate of 100 pounds per hour, while Recycling Center B processes aluminum at a rate of 2 tons per week. Assuming that both centers operate all day every day, which center processes aluminum faster, and why?

How is this problem factored? 35x^2-57x-44

The jones family drove 1,200 miles in 3 days on the first day they traveled 1/4 of the total distance how many miles did they travel the first day

Angela enjoys swimming and often swim a at a steady pace to burn calories. At this pace, Angela can swim 1,700 meters in 40 minutes. What is Angela's unit rate?

47 is 0.5% of what number

R=2s-6t+5 / 2, solve for s

Kayla won 37 bouncy ball playing hoops at her schools game night then she gave two to each of her friends she only has 7 left how many friends does she have

sue has 5 ropes of 5350 mm each. If she ties them together to make one long rope and each kont takes up 15 cm, how long will the rope be