Write a variable expression for the word phrase.

The product of 3 and a number n decreased by 7

When Mrs. Turner was a child, in 4 hours she could plow 16 acres. Then the fields were wet and she had to slow to half the speed. How long did it take to plow the last 10 acres

A population of cheetahs decreases by 13% per year. How many cheetahs will there be in the population after 5 years?

Denim shirts were marked down from $40.00 to $29.99. How much will be saved on 2 shirts?

The probability of rolling an even number with a six-sided number cube is about 1/2. Choose the likelihood that best describes the probability of this event.

Which statements must be true about the reflection of ΔXYZ across? Check all that apply. Which statements must be true about the reflection of ΔXYZ across? Check all that apply.

Which of the following statement is true about k-NN algorithm? k-NN performs much better if all of the data have the same scale k-NN works well with a small number of input variables (p), but struggles when the number of inputs is very large k-NN

1/2 the weight of a brick + 20 = 1/3 the weight of a brick + 30. What is the weight of the brick?

What's 1 and two thirds divide three and one half

If x = - 21, what is y?

1. 1 1/3 x ¼ 2. 2/9 : 2/5 3. 1 ¾ : (-2 5/8) 4. 2/9 : z/3