write the following using algebraic notation, using x for unknown numbers i think of a number, multiply by two and add nine

How does the yield of a long-term bond compare to the yield of a short-term bond?

Hayden has $200 and saves $40 more each week. However, every week she spends $10 on Dutch Bros coffee. If she wants to have $800 to buy a new computer, how long will it take for her to save this amount?

Bob has 7 oranges, 10 plums and 4 pears in a bowl. He can choose: an orange and a plum or a plum and a pear or an orange, a plum and a pear. How many different ways can Bob choose a fruit from the bowl?

Batting averages during a baseball season follow an approximately normal distribution with a mean of 0.260 and a standard deviation of 0.060. A statistician for a sports channel wishes to analyze the batting average from the last season.

Sue is making sugar cookies the recipe she calls for needs 2 3/4 flour and 1 1/4 margarine. How many cups of margarine does she need if she uses 11 cups of flour?

2/3 of 27 is equal to what fraction?

The average mark of candidate in an aptitude test was 128.5 with a standard deviation of 8.2. Three scores extracted from the test are 148, 102,152. What is the average of the extracted scores t hat are extreme values (outliers) ?

Solve the system using elimination. x - y = 4 - x - y = 6

A. In April, Fiona received 77 ounces of milk at each feeding. She was fed m times per day. Write an expression to find how many ounces of milk Fiona was fed per day. B. Evaluate the expression: She was fed 5 times a day.

Which equation describes the relationship between the time elapsed and the number of gallons of water remaining in the pool? A = - 600+15,000 B = - 600+13,200 C = - 1,200 + 13,200 D = - 1,200 + 15,000