10/4/19

Solve for x
4x - 3=2x + 5

• x=4
• x=4/3
• x=-4
• x=1

A town's population is 14,000, and it is increasing by 160 people every year.  A nearby town has a population of 24,000, and it is decreasing by 200 people every year.  In about how many years will the populations of the towns be equal?

• 14,000 + 160y = 24,000 - 200y
• 14,000 + 160y = 24,000 + 200y
• 14,000y + 160 = 24,000y - 200
• 14,000 - 160y = 24,000 - 200y

Tags

CCSS.8.EE.C.7B

Which graph does NOT represent y as a function of x?

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Change from standard form to scientific notation: 12,000,000

• 12 x 10⁷

• 0.12 x 10⁷

• 1.2 x 10⁶

• 1.2 x 10⁷

Solve for x
5x - 6=14 + x

• 5
• 4
• 8
• 7

Which statement describes the mapping?

• The mapping represents y as a function of x, because each y-value corresponds to exactly one x-value.

• The mapping does not represent y as a function of x, because two of the x-values correspond to the same y-value.

• The mapping represents y as a function of x, because each x-value corresponds to exactly one y-value.

• The mapping does not represent y as a function of x, because there are more x-values than different y-values.

Tags

CCSS.8.F.A.1

Renting video games from Store S costs $2.50 per game plus a monthly fee of $5.00.  Renting video games from Store T costs $5.00 per game with no monthly fee.  Which inequality represents the situation when the monthly cost at Store S is less that the monthly cost at Store T?

• 2.5v + 5 < 5v
• 2.5v + 5 > 5v
• 2.5 + 5 < 5v
• 2.5v + 5 >  5

Tags

CCSS.7.EE.B.4B