Which of there is a pure substance?

A. Bread

B. Table Salt

C. Soil From a Garden

D. Sea Water

In 20 years, Sam will be 2 times Mary's age. 20 years ago Sam was 4 times Mary's age. How old are Sam and Mary now?

Which lines are parallel in the regular pentagonal prism?

Is the relation a function? Select Yes or No for each relation (3, 3) (3, - 2) (-2, 4) and (1, - 6) (3, 3) (5, - 2) (-2, 4) and (1, - 2) (3, 3) (5, - 2) (-2, 4) and (5, 9) (3, 3) (5, - 2) (-2, 4) and (4, 9)

Talal wants to borrow $1000. He can get a loan of $1000 at a 6% annual rate for 5 years or at 3% annual rate for 10 years. Find the simple interest at 6% annual rate for 5 years

In a survey of sixth grader in an after school theater program 3/5 of the student said they attend a theater class. What percent of student do not attend a theater class?

Jerry drew an obtuse angle. Which could be the measure of his angle?

A library charges a late return fee of 3.50 plus $0.15 per day that a book is returned late write a equation to find the total late fee f for any numbers of days late d

What is the product of 45.67 x 32.58?

If you apply the changes below to the linear parent function f (x) = x what is the equation of the new function vertically compress by 1/4 over the y-axis

A science class measured the mass of a balloon to be 4 grams. After the balloon was inflated the mass was 8 grams. What was the mass of the air inside the inflated balloon?