A chemical company makes two brands of antifreeze. The first brand 35% pure antifreeze, and the second brand is 85% pure antifreeze. In order to obtain 30 gallons of a mixture that contains 70% pure antifreeze, how many gallons of each brand of antifreeze must be used?
Note that the ALEKS graphing calculator can be used to make computations easier.
First brand
gallons
Х
5
?
Second brand
Falang

abde or 1,2,4, 5 is the answer

step-by-step explanation:

here is the

mark brainliest pl

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: