Question

systems of equation

Answer 1

cost equation
if c = cost and x = number of books then

c = 4x + 1550

Answer 2

if you only sell 50 copies then x = 50 and

a*50 >= 1550 where a = the price of the book

Answer 3

solve ^ that for a

Answer 4

a>=31?

Answer 5

good so the price must be $31

Answer 6

for part c your equation would be

income = 31x

Answer 7

for part d, I'm going to assume that they want you to include the base printing costs so

expense equation: c = 1750 + 4x
income equation: i = 20x

Answer 8

that's it, let me know if you have any q's

Answer 9

thx

Answer 10

I would just use graphing software to graph them

Answer 11

ok

Answer 12

the estimate looks like x = 100 ish

Answer 13

part f wants an exact solution so solve:

1750 + 4x = 20x

Answer 14

do uk how to do task 2 a&b?

Answer 15

18a + 9c <= 2475
a + c <= 150

Answer 16

type these into desmos.com grapher

Answer 17

https://www.desmos.com/calculator

Answer 18

if we look at the graph we can find the maximum a value

Answer 19

should be like 112 ish

Answer 20

for part d replace 150 with 200 and re-do the graphs

Answer 21

for part e just divide total budget/price of adult ticket

Answer 22

I'm not sure about part f

Answer 23

ok thank u i have more but i need a break brb

Answer 24

I suppose the drone continues the pattern with 4 g-grandparents, 8 gg-grandparents, 16, and so on

Answer 25

this makes a geometric sequence with r = 2

Answer 26

recursive formula should be
a_1 = 1
a_n = r * a_n-1 where r = 2 (leave the rest alone)