At a restaurant you order a lunch that costs $6.50 and a beverage that costs $1.50. You leave a 20% tip and the sales tax is 7%. What is the total cost?

$10.16

Step-by-step explanation:

Total Cost = Cost of Lunch + Beverage + Tip's Amount + Sales Tax.

Cost of lunch + Beverage = 6.5 + 1.5 = $8

Tip:

8* 20/100 = $1.6

Sales tax:

8* 7/100 = $0.56

Cost of Lunch + Beverage + Tip's Amount + Sales Tax = Total Cost

$8 + $1.6 + $0.56 = $10.16

hope it helps :)

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x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752