Which of the following exponential functions goes through the points (1, 20) and (2, 80)?

f(x) = 5(4)−x
f(x) = 4(5)−x
f(x) = 5(4)x
f(x) = 4(5)x

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.

Write the equation of the circle centered at (10,-2) with radius 2.

Dylan is evaluation the expression 13+19+7+10 at one step in his work, dylan rewrites the equation as 13+7+19+10 which property of addition must dylan have used when he evaluated the expression?