ALGEBRA II FINAL EXAM A

The graph above illustrates the elevation changes of a trail in New York State as a hiker progresses. What is the range of this function?

• 1) 1,000 ≤ x ≤ 1,500

• 2) 1,000 ≤ y ≤ 1,500

• 3) 0 ≤ x ≤ 12

• 4) 0 ≤ y ≤ 12

Find the value(s) of x that satisfy the equation –2|3x+5|+4=0

• x = –1

• x = –3, x = –5

• x = –1, x = –5

• ∅

• 19

• 25

• 37

• 13

The population of a small town in Durham, NC is 5,000, and it increases by 3% annually. Which expression can be used to determine the town's population y years from now?

• 3(5,000)^y

Which is the inverse of the function f(x) = x + 3?

• -16

• 16

• -32i

• 32i

• x = 2

• x = 3

• x = 4

• x = 5

• -108; two imaginary roots

• 0; one real root

• 180; two real rational roots

• 180; two real irrational roots

A farmer has two types of crops: corn and wheat. He sells corn for $3 per bushel and wheat for $4 per bushel. Last month, he sold a total of 200 bushels and earned $720. Formulate a system of equations and use matrices to find out how many bushels of each crop he sold.

• Corn: 80 bushels, Wheat: 120 bushels

• Corn: 100 bushels, Wheat: 100 bushels

• Corn: 50 bushels, Wheat: 150 bushels

• Corn: 90 bushels, Wheat: 110 bushels

Solve the matrix equation using inverse equations.

• A

• B

• C

• D