A number is decreased by eight times the sum of twice the number and five. simplify

The expression derived shall be

A - 8(2A+ 5)

Step-by-step explanation: First of all, let us call the unknown number ‘A.’

Looking at the expression from the latter part of it, we have “...the sum of twice the number and five...,”

This can be written as the sum of 2 x A and 5, that is 2A + 5. Then earlier the question states that the unknown number A, is decreased by 8 times the expression we just came up with. In other words, A is decreased by 8 times 2A + 5. So what we now have is,

A minus 8 times 2A + 5 which can be re-written as

A - 8(2A + 5)

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.