Algebra 1 Quiz 2

Which expression represents  $\left(3x^2y^4\right)\left(4xy^2\right)$  in the simplest form.

•  $12x^2y^8$  

•  $12x^2y^6$  

•  $12x^3y^8$  

•  $12x^3y^6$  

Solve for x:  $\frac{3}{5}\left(x+2\right)=x-4$  

• 8

• 13

• 15

• 23

When solving the equation  $3\left(2x^2+5\right)-7=5x^2+4$  John wrote  $\left(6x^2+15-7=5x^2÷4\right)$  as his first step.  Which property justifies John first step?

• distributive property of multiplication over addition
  

• commutative property of addition
  

• multiplication property of equality
  

• addition property of equality
  

Which relation is not a function?

• [(1,5), (2,6), (3,6), (4,7)]

• [(-1,6), (1,3), (2,5), (1,7)]

• [(4,7), (2,1), (-3,6), (3,4)]

• [(-1,2), (0,5), (5,0), (2,-1)]

To watch a varsity basketball game, spectators must buy a ticket at the door. The cost of an adult ticket is $3.00 and the cost of a student ticket is $1.50. If the number of adult tickets sold is represented by a and student tickets sold by s, which represents the amount of money collected at the door from the ticket sales?

• 4.50as

• 4.50(a + s)

• (3.00a)(1.50s)

• 3.00a + 1.50s

A typical cell phone plan has a fixed base fee that includes a certain amount of data and an overage charge for data to use beyond the plan. A cell phone plan charges a base fee of $62 and an overage charge of $30 per gigabyte of data tgat exceed 2 gigabytes. If C represents the cost and g represents the total of gigabytes of data, which equation could represent this plan when more than 2 gigabytes are used?

• C = 30 + 62(2 - g)

• C = 30 + 62(g - 2)

• C = 62 + 30(2 - g)

• C = 62 + 30(g - 2)

Last week , a candle store received $355.60 for selling 20 candles. Small candles sell for $10.98 and large candles sell for $27.98. How many large candles did the store sell?

• 6

• 8

• 10

• 12

Alicia has invented a new app for smart phones that two companies are interested in purchasing for a 2-year contract. Company A is offering her 10,000 for the first month by 5000. Company B is offering $500 for the first month and will double their payment each month from the previous month. Monthly payments are made at the end of each month. For which monthly payment will Company B's payment first exceed Company A's payment?

• 6

• 7

• 8

• 9

What is the value of the expression  $\left|-5x\ +\ 12\right|$  when x = 5.

• - 37
  

• - 13
  

• 13

• 37

The table below shows the cost of mailing a postcard in different years. During which time interval did the cost increase at the greatest average rate?

 $\frac{YEAR}{COST}\ \frac{1898}{1}\ \frac{1971}{6}\ \frac{1985}{14}\ \frac{2006}{\ 24}\ \frac{2012}{35}$  

• 1898 - 1971
  

• 1971 - 1985
  

• 1985 - 2006
  

• 2006 - 2012