At a local store with a “no tax” sale, robert bought 7 dvds and 5 cds for $95.50 before tax. michael bought 3 dvds and 4 cds for $49.75 before tax. if william has $80 to spend, which one of the following purchases could he make ?

I think the 49.75 is the correct answer since there is no tax and he only has 80 dollars to spend

Step-by-step explanation:

it should be a and d. lmk if i'm wrong xd

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.