3/27 Math 1

What is the value of y in the following system of equations?  
2x + 3y = 4 
 3x + 4y = 5

• -3
• -1
• 1
• 2

Solve for x: 
 2(x + 5) - 4(2x – 1) = 14

• x=-2
• x=-1
• x=0
• no solution

Simplify each expression.
(4n⁴ - 8n + 4) - (8n² + 4n⁴ + 1)

• -8n² - 8n + 3 
• -7n² - 8n + 3 
• -6n² - 8n + 3
• -7n² - 4n + 3

  The Rockbottom Blues Band charges a $300 set up fee plus $175 per hour (h) that they play.  Which statement represents the total cost (c) for hiring the band?

• c = 175 + 300h
• c = (175 + 300)h
• c = 300 + 175h 
• c = 300 + 175 + h

Gerri purchases a coupon book with discounts for her favorite coffee shop. Every coupon for the coffee shop offers the same discount. The table shows her total savings, y, based on the number of coupons, x, used from the book.

What are the slope and y-intercept of the line represented by the points shown in the table?

• slope: 2, y-intercept: –20

• slope: 2, y-intercept: 10

• slope: 5, y-intercept: –20

• slope: 5, y-intercept: 10

What is the product of 3a(8a-6b)

• 24a-18ab

• 24a-18b

• 24a²-6b

• 24a²-18ab

The cost of a cab ride is $4.25 plus $0.35 per mile. How many miles did a person travel if the cost of the cab ride was $14.75?

• 30 miles
• 35 miles
• 42 miles
• 54 miles

The population of elk in a region is shown in the table. 
Year      Population
  0              250
  1              230
  2              170
  3              190
  4              260
What is the average rate of change in the elk population between year 1 and year 3?

• -60 elk per year
• -40 elk per year
• -20 elk per year
• -10 elk per year

If the endpoints of the diameter of a circle are (–4, 4) and (2, –2), what are the coordinates of the center of the circle?

• (-1 , 1)
• (1 , -1)
• (-3 , 3)
• (3 , -3)

On this coordinate grid, the library is located at point T, the music stores is located at point S, and the pet store is located at point R.  Each grid line represents 1 mile. How much farther, to the nearest tenth of a mile, is the music store from the library than it is from the pet store?

• 3.3
• 8.0
• 11.3
• 13.6