Solve this by substitution

Y=2x-9

X+3y=8

If 0.8 pounds of beef costs $3.68 how much does the beef cost per pound

A car passes a landmark on a highway traveling at a constant rate of 50 kilometers per hour. One hour later, a second car passes the same landmark traveling in the same direction at 70 kilometers per hour.

UPS charges $6.00 for the first pound, $1.00 for the second pound, and $0.15 for each additional pound. FedEx charges $4.00 for the first pound, $2.00 for second pound, and $0.25 for each additional pound.

Subtract 45 from 16 raised to the 6th power; then multiply by 3.

What is 15% of $32.75

I NEED to write a number trick that takes any number and always ends with 10 more than the original

A Labrador Retriever weighs 48 pounds. A Huskie weighs 755 ounces. Which dog weighs more? By how many ounces more?

What is the solution to 5x < 30

Which interpretations dor the given expression is correct

Javier is buying food in the lunch line. The tray of salad plates is 3/8 full. The tray of fruits plates is 3/4 full. Which tray is more full?