Solve for x. show each step of the solution. 4.5(4 − x ) + 36 = 202 − 2.5(3x + 28)

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Step-by-step explanation:

4.5(4 − x ) + 36 = 202 − 2.5(3x + 28) now multiply from the paranthesis

18 -4.5x + 36 = 202 -7.5x - 70 will add the numbers

54-4.5x = 132-7.5x move x to the left and numbers to the right

7.5x-4.5x = 132-54 make the difference

3x = 78 and divide by 3

x= 26

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)