Solve the system of linear equations by substitution

-x+5y=28

x+3y=20

16 less than one-fourth of some number, w" can be expressed algebraically as

Write the following numeral in word form: 6.82

Ice skates on sale for 25% off cost $45. What is the regular price of the skates? a. $56.25 c. $70 b. $60 d. $80

What proportion is between 1.25 and 2.1 standard deviations above the mean?

The volume of 10 drops of liquid is 0.01 fluid ounce. what is the volume of 100 drops

Ecessary. Bamples 3. What number is 15% of 60?

Let f (x) = 9x - 2 and g (x) = - x + 3. Find f (g (x)).

3x+2y+2x when x = 20 and y=-3

A 4-pound bag of sugar contains 454 one-teaspoon servings and costs $3.49. A batch of muffins uses 1/4 cup of sugar. How many batches can you make if you use all the sugar? What is the cost of sugar for each batch? (1 cup = 48 teaspoons)

Tom had $84.50 and then spent $12.25 for a music CD, $17.85 for a gift, and CV$15.45 for gasoline. How much did he have left?