Math 1 Quiz #8

Marisa bought a coat for a trip to Alaska and used a coupon for 20% off the coat price. The total cost of her coat, with the discount, was $257.50. Which equation could she use to find the price of the coat without the discount?

• $c-0.20\left(c\right)=257.50$

• $0.20c=257.50$

• $c+0.20\left(c\right)=257.50$

• $c=257.50\ +0.20$

Your car lease allows you 10,000 miles to drive each year. So far this year, you have used 6,900 miles and you have 3 months left on this year's plan. Which inequality could you use to determine how many miles at most you can use per month so that you don't go over your yearly plan miles?

• $3x+6,900>10,000$

• $3x+6,900<10,000$

• $3x\ +6,900\ge10,000$

• $3x+6,900\le10,000$

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 aunt has agreed to donate $10 and you brother has agreed to donated $0.07 per minute. If together they donated $11.05, what equation represents this situation?

• $\left(10+0.07\right)x=11.05$

• $0.07x\ +10=11.05$

• $10x+0.07=11.05$

• $11.05x=10+0.07$

Juan is saving for a new computer and has saved $179. He is saving $3 a day and needs at least $851 for the computer he wants. How many weeks, not days, will it take him to save for the computer he wants?

• at least 32 weeks

• at least 224 weeks

• at most 224 weeks

• at most 284 weeks

It costs $75 to buy a water pump and about $0.50 per minute to run it. What equation models the total cost of using a water pump?

• $x+y=75.50$

• $y=75.50x$

• $y=75x+0.50$

• $y=0.50x+75$

The cost of having your car towed is $55 to hook up the car and then $2.50 per mile towed. What equation models this scenario?

• $x+y=57.50$

• $y=57.50x$

• $y=2.50x+55$

• $y=50x+2.50$

A 13-inch candle burns at a rate of 2 inches per hour. What is the graph of the equation that models the height of the candle over time?

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Given the equation

 $y=5x+6$  , which point is a solution?

•  $\left(-2,\ -3\right)$  

•  $\left(-4,\ -26\right)$  

•  $\left(-5,\ -31\right)$  

•  $\left(2,\ 16\right)$  

Given the inequality

 $y<-3x-12$  , which point is NOT a solution?

•  $\left(4,\ -20\right)$  

•  $\left(0,\ -16\right)$  

•  $\left(-1,\ -12\right)$  

•  $\left(5,\ -30\right)$  

An online company is advertising a subscription service for downloads of e-books. The monthly fee is $5.50, plus $1.99 for each downloaded book. You can afford to spend no more than $12.00 each month on e-books. What is the maximum number of e-books you can download?

• 4

• 2

• 5

• 3