The science club went on a two-day field trip. the first day the members paid $40 for transportation plus $14 per ticket to the planetarium. the second day they paid $85 for transportation plus $11 per ticket to the geology museum. write an expression to represent the total cost in dollars for two days for the n members of the club.

(40 + 14n) + (85 + 11n) = total

Step-by-step explanation:

Two brackets must be needed as there are two days which both contain different calculations.

The first bracket must contain 40+ because that is the price of transportation and wont change. Then, if there are n members that each cost 14 then we can show this by 14n (14 * n)

40 + 14n

Second bracket must contain +85 because that is a variable that wont change. Then if there are n members that each cost 11 then this can be shown by 11n (11 * n)

85 + 11n

Now, put brackets over both and add them together:

(40 + 14n) + (85 + 11n) = total

Which is the expression!

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m