How do you add, subtract, multiply, and divide numbers written in scientific notation?

If gas cost 2.69 per gallon how much would it cost for 6.5 gallons

I don't understand (t+8) (-2) = 12

Suppose that $7,000 is invested at an interest rate of 6%, compounded continuously. Find the amount in the account after five years if no withdrawals are made

What is th evalue of the expression when b=5

Abhishek is 6 years older than Jagadish. Six years ago Abhishek was twice as old as Jagadish. Write down the situation in algebraic expression and find how old is each now?

Order numbers from greater to less - 5,-2,0,4

For a certain instant lottery game comma the odds in favor of a win instant lottery game, the odds in favor of a win are given as 59 to 41. Express the indicated degree of likelihood as a probability value between 0 and 1 inclusive.

Instructions:Select the correct answer. Leah is creating satin bows for a wedding. From a 15-meter-long ribbon, she first cuts a piece 3 4/9 meters long. Then she cuts a piece 6 5/9 meters long from the remaining ribbon.

0.0025 cm << in scientific notation

Which equation represents Jacob's age