In one week 128 cell phones were sold. The following week 37more cell phone were sold than the week before. how many cell phones were sold in those two weeks?

Gary bought a car for $40,000. If V = 40,000 (.85) t represents the value of the car after t years, how long will it take the car to be worth less than one-fourth of its purchase price?

What is another way to represent the ratio 40:1?

Theo wants to use a cookie recipe that makes 36 cookies, but he wants to increase the number of cookies to 54. If the recipe calls for 2 cups of sugar, how much sugar should he use?

Kara's pet is 5 years younger than Alaiza's pet. The sum of their ages is 41. How old is Alaiza's pet?

The debate team has m members. Each member sold 5 coupon books as a fundraiser. Write an expression that shows the number of coupon books the club sold.

X is a normally distributed random variable with a mean of 11 and a standard deviation of 2.0. find the value of x for which 70.54% of the area under the distribution curve lies to the right of it. (note: the diagram is not necessarily to scale.

What is the root of this equation? 2x^2 - 4x + 9 = 0

Which division problem is equivalent to 2/5a. 5. divide 5 by 2c. cut 5 equal sections from a 2 foot long ribbond. split 5 cups of yogurt into 2 equal servings?

Translate into an equation and solve. what percent of 64 is 16? (do not round until the final answer. then round to two decimal places as needed.)

p: If every fourth card drawn is a spade, then 25% of the cards in a deck would be spades. If 25% of the cards in a deck are spades, then every fourth card drawn would be a spade.