7. REINFORCE On a trip to the Museum of Mathematics in New York City, you traveled 754 miles. The trip took you 13 hours and you used 26 gallons of gas. The total cost of the gas was $78.78. Complete the following rates for the trip. a. Your average speed on the trip was miles per hour. b. The mileage your car got on the trip was miles per gallon. c. The price you paid for gas was per gallon.

because 1.2 isnt half of 6 duh

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !