Atelephone company charges $0.30 for the first 4 minutes of a call and $0.18 for each additional minute. how long can a person talk for $3

x= total minutes -4    the 1st 4 minutes are included in the .30

total cost = .3 + .18 x  

3 = .3 +.18 x

subtract .3 from each side

2.7 = .18x

divide by .18 on each side

2.7/.18 = x

15 = x

x = total minutes -4

add 4 to each side

15+4 = total minutes

they can talk 19 minutes

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation:

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