Intro to Algebra: Practice Test Q 3

Identify the function rule that best represents the following statement:
The total cost (C) for kilograms of beef (k) if each kilogram costs ​$2.55

• C = 2.55k

• C = 2.55 + k

• C = 2.55 - k

• C = 2.55k + 2.55

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Identify the function rule that best represents the following statement:
A bottle rocket is being launched from the roof of an 80 meter tall building. If the rocket travels straight up at a rate of 22 m/s, what is the total height of the rocket as a function of time?

• H = 108x

• H = 80 - 22x

• H = 80 + 22x

• H = 80x + 22

Tags

CCSS.HSF-BF.A.1A

A plumber charges a service fee of $40 plus $25 per hour for labor.
(A) Write a function rule for the total cost of hiring the plumber for a job that takes x hours.
(B) How much would it cost to hire the plumber for a job that takes 4 hours?

• (A) y = 40 + 25x
  (B) $140

• (A) y = 40x + 25
  (B) $185

• (A) y = 40 + 25x 
  (B) $185

• (A) y = 40x + 25 
  (B) $140

Tags

CCSS.HSF-BF.A.1A

^{What is the solution?} 

• 1

• -2

• (1, 2)

• (1, -1)

Tags

CCSS.8.EE.C.8A

Find the length of the missing side. 

• 17 cm

• 22 cm

• 15 cm

• 13 cm

Tags

CCSS.8.G.B.7

The Pythagorean Theorem ONLY works on which triangle? 

• obtuse

• scalene

• isosceles

• right

Tags

CCSS.8.G.B.8

Which set of sides would make a right triangle?

• 4,5,6

• 8,10,12

• 5,12,13

• 5,10,12

Tags

CCSS.8.G.B.8

What is the side of a right triangle across from the right angle called?

• square

• arm

• leg

• hypotenuse

Tags

CCSS.HSG.SRT.C.6

CCSS.HSG.SRT.C.8

Find the length of the missing side. 

• 20 in.

• 68 in.

• 16 in.

• 80 in.

Tags

CCSS.8.G.B.7

Evaluate
(2 x 10⁷) x (4 x 10^-3)

• 8 x 10¹⁰

• 8 x 10^-4

• 8 x 10^-10

• 8 x 10⁴