Math 1 Quiz #9

Marisa bought a coat for a trip to Alaska and used a coupon for 10% off the coat price. The total cost of her coat, with the discount, was $242.10. Which equation could she use to find the price of the coat without the discount?

• $0.10x=242.10$

• $x+0.10x=242.10$

• $x-0.10x=242.10$

• $x=242.10+0.10$

Your cell phone plan allows you 500 minutes to talk per month. So far this month, you have used 345 minutes and you have 9 days left on this month's plan. Which inequality could you use to determine how many minutes at most you can use per day so that you don't go over your monthly plan minutes?

• $9x+345>500$

• $9x\ +\ 345<500$

• $9x+345\le500$

• $9x+345\ge500$

Tags

CCSS.7.EE.B.4B

You are participating in a fund-raiser in which you read for donations. People can donate money based on a flat fee or based on the number of minutes you read. So far, you have two donors. Your boss has agreed to donate $10 and your dad has agreed to donate $0.08 per minute. If together they donated $10.72, what equation represents this situation?

• $10.72x=10+0.08$

• $0.08x+10=10.72$

• $\left(10+0.08\right)x=10.72$

• $10x+0.08=10.72$

It costs $75 to buy a water pump and about $0.60 per minute to run it. What equation models the total cost of using a water pump?

• $y=0.60x+75$

• $y=75.60x$

• $y=75x+0.60$

• $x+y=75.60$

The cost of having your car towed is $50 to hook up the car and then $5.50 per mile towed. What equation models this scenario?

• $y=5.50x+50$

• $y=55.50x$

• $x+y=55.50$

• $y=45x+5.50$

Solve the equation for y.

 $18x+3y=-12$  

•  $y=-4x-6$  

•  $y=6x+4$  

•  $y=4x+6$  

•  $y=-6x-4$  

In the equation 3x + 7y = 12, the first step to isolating y would likely be:

• Subtract 3x from both sides of the equation.

• Divide both sides of the equation by 7y.

• Divide both sides of the equation by 3x.

• Subtract y from both sides of the equation.

Which graph represents the solution to the inequality

 $y<\frac{7}{3}x-1$  ?

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Which inequality represents the graph?

• $y\le x-2$

• $y>-x-2$

• $y>x-2$

• $y>-x-3$

Tags

CCSS.HSA.REI.D.12

Which inequality represents the graph?

• $y\le4x+2$

• $y<4x+2$

• $y\ge-4x+2$

• $y\ge4x+2$

Tags

CCSS.HSA.REI.D.12