*u get 16 answer i will make you brainlest picture above (i’m kinda failing)

Question I  28

Question II   I only

Step-by-step explanation:

an = an-1 +n

a1 =1

a2 =an-1 +n = 1 +2 =3

a3 = a2 +3 = 3+3 =6

a4 = a3+4 = 6+4 = 10

a5 = a4+5 = 10+5 =15

a6 = a5 +6 = 15+6 =21

a7 = a6 +7 = 21+7 =28

Question II

1 miles = 1.6 km

1 miles = 5280 ft

1 miles = 1760 yds

10 miles * 1.6 km/ 1 miles = 16 km   > 15  km yes

44880 ft * 1 mi/ 5280 ft * 1.6 km/ 1 miles  = 13.6 km  < 15 km   no

15560 yds * 1 mi/ 1760 ys *1.6 km/ 1 miles = 14.145 km < 15 km  no

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

hi

step-by-step explanation: