Which of the following is a parent function?

A. f (x) = 2x

B. f (x) = - 3x^3+1

C. f (x) = 1/2 (3) ^x

D. f (x) = 3^x-x/3

33 1/3 % of what number is 21

Simplify (x+4) ^2 how is this simplified

If you subtract a negative number from another number, will the other number increase or decrease?

Stephano walks 2/5 miles is 1/4. What is stephano's speed in miles per hour

Having trouble with how to solve questions like this: In a recent student government election, the ratio of students who voted for the winner to all the students who voted was 0.95 . The number of students who voted was 60 .

The population of a town is 20,000 and is decreasing at a rate of 5% per year. What is the population after 23 years?

Is 1/9 equal, less, or greater than 1/3?

A 12 ft ladder is leaning against a building. The ladder makes a 45 degree angle with the building how far up is the building does the ladder reach

9x-4y=-7 7x-12y=39

Amanda is 3 years older than Brantley and Carlos is twice as old as Amanda. The sum of their ages is 57. How old is Amanda?