Erica knits 18 squares on Monday. She knits 7 more squares each day for the rest of the week. How many squares does Erica have on Friday?

Answer 1

google sum of arithmetic sequence

Math is fun site is good for this

Answer 2

http://www.mathsisfun.com/algebra/sequences-sums-arithmetic.html

Answer 3

a is 18
d is 7

Answer 4

i guss 53

Answer 5

7×4=28 28+18=46

Answer 6

its 56 because 18 plus 7 plus 7 plus 7 plus 7 equals 56

Answer 7

its 46 because what soyna said was true and made a lot of sence

Answer 8

first time here, umm I guess also 46? ( still working on my test )