3.1+to+3.5+quiz+questions

Sorry these are so late, Mr. Bowlby

1)  6 (x + 1) – 4x = -8

2) 8 (//t// + 7) = 32 + 2//t//

3 ) 6(//w// – 5) – 3//w// = //w// + 10 

4)  3 (x + 1) = 2x - 4

5) 2+ 1/4//t// = //t// + 5

6 ) 4/3//w// + 10/3 = 2 (//w// – 5) 

7) An online music club sells compact discs for $15 each plus $2 shipping and handling per order. If Maria’s total bill for one order was $77, how many compact discs did Maria purchase? Write an equation to model the situation and then solve.

8) You are driving your car and it takes you 45 minutes to go 9 miles. If you continue at the same rate, how long will take you to go an additional 13 miles?

9) The scale of a map is 1 cm: 25 mi. Determine the distance between two cities on the map that are 6.3 centimeters away.

ANSWERS 1 & 4) x = -7

2 & 5) t = -4

3 & 6) w = 20

7 ) the cost of the order is equal to the number cds times cost ($15) plus shipping for one order($2) 77 = 15x + 2 where x = number of cds
 * She ordered 6 cds**.

8) The rate of travel is 9miles/45minutes which is a rate of 0.2 miles a minute. The equation would be miles = 0.2t where t is time. If you need to travel 13miles, we plug 13 in for miles and get 13 = 0.2t Divide by 0.2 and get the answer of
 * 65 minutes.**

9) The proportion should be setup with centimeters on top and miles in the bottom 1 cm 6.3cm = 25 mi x mi After cross multiplying, the answer is
 * 157.5 miles**