The expression 3 × n can be written without the multiplication sign as 3n. for each expression in parts (a)–(c), use n = 1, 2, 3, . ., 10 to evaluate the expression. describe the set of ten numbers. suppose the sequence continues for values of n greater than 10. do the numbers 12, 21, 30, or 210 appear in the sequence?

step-by-step explanation:

the true ones are a b and d

it would open into a square depending on the type of envelope i’m not sure about the second part

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)