Coordinate Algebra Unit 1 EOC Review

A rectangle has a length of 12 meters and a width of 400 centimeters. What is the perimeter, in cm, of the rectangle?

• 824

• 1,600

• 2,000

• 3,200

Jill swam 200 meters in 2 minutes 42 seconds. If each lap is 50 meters long, which time is her estimated time, in seconds, per lap?

• 32

• 40

• 48

• 60

The distance a car travels can be found using the formula d= rt, where d is the distance in miles, r is the rate of speed in miles per hour, and t is time in hours. Bill drives his car in 70 miles per hour for each half hour. Which term gives the distance in miles that Bill travels?

• 1

• 2

• 2(70)

• (70)(1/2)

A certain population of bacteria has an average growth rate of 0.02 bacteria per hour. The formula for the growth of the bacteria's population is $A\ =\ P_0\left(2.71828\right)^{0.02t}$ , where  $P_0$  is the original population, and t is the time in hours. Which factor represents the rate at which bacteria grows? 

•  $P_0$  

• 0.02t

• 2.71828

• 1,478

The sum of the angle measures in a triangle is  $180\degree$ . Two angles of a triangle measure  $20\degree$ and  $50\degree$ . What is the measure of the third angle? 

•  $30\degree$  

•  $70\degree$  

•  $110\degree$  

•  $160\degree$  

The sum of the angle measures in a triangle of 180. Two angles of a triangle measure 30 and 70. Which of the following equations can be used to find the third angle?

• $x\degree-\left(30\degree+70\degree\right)=180\degree$

• $30\degree+70\degree+x\degree+180\degree$

• $30\degree+70\degree+180\degree=x\degree$

• $30\degree+70\degree-180\degree=x\degree$

Which equation shows $P=2l+2w$  when solved for w?

•  $w=\frac{2l}{P}$  

•  $w=\frac{2l-P}{2}$  

•  $w=2l-\frac{P}{2}$  

•  $w=\frac{P-2l}{2}$  

The cost, in dollars, of a single-story home can be approximated using the formula C = klw, where l is the approximate length of the home and w is the approximate width of the home. Find the units for the coefficient k.

• dollars per square foot

• dollar per foot

• square foot per dollar

• foot per dollar

The formula for density d is $d=\frac{m}{v}$ , where m is mass and v is volume. If mass is measured in kilograms and volume is measured in cubic meters, what is the unit for density? 

•  $\frac{m^3}{kg}$  

•  $\frac{m^2}{kg}$  

•  $\frac{kg}{m^3}$  

•  $\frac{kg}{m^2}$  

A rectangle has a length of 2 meters and a width of 40 centimeters. What is the perimeter of the rectangle?

• 4.8 cm

• 4,800 cm

• 48 cm

• 480 cm