What is the product?
3a(89-65)

102a

Step-by-step explanation:

The first step is to subtract 65 from 89. PEMDAS states that equations in parentheses should be evaluated first.

89 - 65 = 34

Therefore, the equation becomes

3a(34)

Now, multiply 3 by 34, then multiply that by a.

3 * 34 = 102

102 * a = 102a

So, the final answer is 102a.

b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.