Solve using substitution.

-3x + y = - 5

-9x + 5y = - 19

A cylinder shaped drum is used to store used motor oil. The drum has a height of 3 ft and a radius of 1.5 ft. How many cubic feet of oil does the drum hold? Use 3.14 to approximate pi.

A jewelry retailer offers a pendant for $95, and matching earrings for $68.95. If the two items are both purchased, the retailer offers a discount of 6.1%. Find the sale price for the pendant/earrings combination. Round to the nearest cent. $153.

After 5 years, a $2,450 investment is worth $3,123.75. What is the simple annual interest rate for this investment? Enter the answer as a percent.

The temperature dropped from 80°F to 70°F. What is the percent drop in the temperature? 12.5% 10% 15.5% 14.3%

Nine workers are hired to harvest potatoes from a field. Each is given a plot which is 11*10 feet in size. What is the total area of the field? Write your expression and show your work.

What unit would you to measure the weigh if a chair

What is the following sum? √x^2y^3 + 2√x^3y4 + xy√u

Xy + 11x + 3y + 33 factor by grouping

Is 14/50 closer to 9/11 or 10/11

In a round-robin tournament with n teams, the number of games that must be played is (n^2-n) / 2. How many teams are in a round-robin tournament in which 55 games are played?