What is another way to write the expression r⋅(18−3)? A. r⋅18−3
B. (r⋅18)−3
C. (r⋅18)−(r⋅3)
D. (r⋅18)⋅3

the is c

Step-by-step explanation:

example

3(x-7)+1

3 multiply anything

3x-21+1

add 1 to -21 equal -20

3x-20

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true