1. Twice the sum of a number and 9 is equal to three times the difference of the number and 4. Find the number
2. A car rental agency advertised renting a car for $28.95 per day and $0.28 per mile. IF kevin rents this car for 4days, how many whole miles can he drive on a $150 budget
1. The number they aren't given us can be represented by x. 2x (twice the sum of a number)+9 (and 9)=(is equal to) 3* (three times) (x-4 (the difference of the number and four)) 2x+9=3*(x-4) 2x+9=3x-12 9=x-12 x=21 2. He is already spending 28.95 for each day, since he is renting for four days, multiply that by four. So far he has already spent $115.80. He has (150-115.80=34.20) $34.20 left. .28 per mile is charged, and since he has 34.20 left he can only use as many times as 28 goes into 34.20. 34.20/28=your answer
