Question

A lumberman stacks planks of wood, starting with 30 planks in a row. Each row he stacks has one less plank than the row below it. The last row he stacks has 15 planks. How many rows of planks has he stacked?

Answer 1

I would start with an equation and plug in 15

Answer 2

30-1(n-1)=15

Answer 3

solve for this

Answer 4

a=12 c=16 d=18
answer choices

Answer 5

16

Answer 6

subtract 30 to the other side which than is -15, divide -1 and lastly add 1

Answer 7

i got it
itss 16

Answer 8

awesome :)

Answer 9

good luck

Answer 10

thank so much bro

Answer 11

@mkapad01 can u help me with functions ?

Answer 12

sure, I'll try

Answer 13

Dean and Tara are photographers. They take pictures of seniors for high school yearbooks. They charge a standard fee for taking the pictures. There's also a charge for each set of prints ordered. So the number of sets of prints determines the total cost.

Answer 14

let s
stand for the sets of prints ordered. Write the rule that describes a student's total cost.

Answer 15

@mkapad01

Answer 16

is this all they give you?

Answer 17

yeah

Answer 18

is it okay to use many more variables

Answer 19

1+2s(n-1)=students total cost

Answer 20

is am guessing this

Answer 21

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