3 baguettes and 2 rolls=£3 1 baguettes and 4 rolls=£2
How much does each item cost on its own?

baguettes are b = $0.80  

rolls are r =  $0.30

Step-by-step explanation:

1b + 4r = 2

3b + 2r = 3       step 1 when we need to balance and make one the same

6b + 4r = 6       step 2  when both equations must have 1 same value ie) 4r we take 2r and x2 to all values on that same equation.

6b + 4r = 6  

-

1b + 4r = 2         step 3 when both equations show add we subtract them

5b = 4

b = 4/5

b = 0.8          b = 0.8 =   4/5   step 4 when we find x we plug in for x in this case we found b and plug in for b

1(0.8) + 4r = 2

0.8 + 4r = 2

4r = 2 - 0.8

4r = 1.2

r   = 1.2 /4

r   =  0.3

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.