Simplify this and show your work :

Your brother has saved $69 to spend on basketball cards. He plans to buy the cards at a sale. Single cards are $9, and if you buy three cards, you get a fourth for $7. if you buy five cards, the cost is $39.50.

Sally has x books that weigh 2 pounds each and 8 books that weigh 3 pounds each. the total weight of her books is 62 pounds. which equation below could be used to find how many 2-pound books sally has?

During a paint sale hardware store sold 33 gallons of flat paint and 57 gallons of high-gloss paint what's the ratio of gallons of high-gloss soul to the total gallons sold

What is the probability of obtaining eleven heads in a row when flipping a coin? interpret this probability?

Write an expression let x represent the number if tickets sold, and y represent the total amount of money raised

Find the value of the standardized z-test statistic and the area above 140 for a N (160,25) distribution. Round your answer to three decimal places. A) z = - 0.8, area = 0.212B) z = - 0.8, area = 0.788 C) z = 0.8, area = 0.212 D) z = 0.8, area = 0.

Let gg be an exponential function that is changing at a rate proportional to itself, with constant of proportionality 0.60.6. (a) what's the growth factor of gg?.6. (b) the function gg exhibits

Write 87/20 as a terminating decimal

7x + 1 = x + 7 whats the answer

How many / dfrac13 / text{ cm} 3 1 cmstart fraction, 1, divided by, 3, end fraction, space, c, m cubes does it take to fill the prism answer?