Keystone Practice

Sam needs to make a long-distance call from a pay phone. With his prepaid phone card, he will be charged $1.00 to connect and $0.50 per minute. If he places a collect call with the operator he will be charged $3.00 to connect and $0.25 per minute. In how many minutes will the phone card and the collect call cost the same?

• 5 minutes

• 5 1/3 minutes

• 8 minutes

• 16 minutes

Tags

CCSS.8.EE.C.7B

What is the correlation represented by the scatter plot shown?

• Positive

• Negative

• None

• Undefined

Tags

CCSS.HSS.ID.B.5

When the expression (x^2 - x - 12) is factored completely, which is one of its factors?

• (x - 4)

• (x - 6)

• (x + 4)

• (x - 3)

Which value of x makes 5 sqrt(7x) equivalent to 15 sqrt(21)?

• A) x=3

• B) x=9

• C) x=27

• D) x=225

The amount charged for each large pizza (p) is based on the cost of a plain pizza plus an additional charge for each topping (t). The following equation models this relationship: p = 7 + 0.75t. What does the number 0.75 represent in the equation?

• A) Number of toppings

• B) Cost of a plain pizza (no toppings)

• C) Additional cost for each topping

• D) Cost of a pizza with one topping

A carpet cleaning company charges $2 for every square yard of carpet cleaned plus a fee of $42. What is an equation for the charge, c, in terms of the number of square yards, n?

• A) c = 2 + 40n

• B) n = 40 + 2c

• C) c = 2n + 42

• D) c = 42n + 2

Tags

CCSS.6.EE.C.9

The Hamburger Hut is giving away toys. They have 1,000 toys on hand and will give away 8 toys per day. The number of toys, t, is a function of the number of days, d, which have passed since they began giving away toys. The function is defined as t = 1000 - 8d. What is a reasonable domain for this situation?

• A) d ≤ 1,000

• B) d ≥ 0

• C) 0 ≤ d ≤ 125

• D) d > 0

What is an expression for the nth term of this sequence: 5, 8, 11, 14, 17, ...?

• A) 3 + 5n

• B) 2 + 3n

• C) 3 + 2n

• D) 5 + 2n

Tags

CCSS.HSF.BF.A.2

The length of a rectangle is 3 centimeters more than 3 times the width. If the perimeter of the rectangle is 46 centimeters, find the dimensions of the rectangle.

• A) length = 5 cm ; width = 18 cm

• B) length = 13 cm ; width = 5 cm

• C) length = 18 cm ; width = 5 cm

• D) length = 13 cm ; width = 8 cm

What are solutions of the inequality q + 12 - 2(q - 22) > 0 ?

• ( q < -32 )

• ( q > -32 )

• ( q > 56 )

• ( q < 56 )