Which of the following statements about a variable are true?

A variable cannot be subtracted.

A variable is represented by a letter.

A variable represents a quantity.

A variable cannot be multiplied.

How many unique triangles can you construct with all sides having integers length, with one side of length 5 cm and a perimeter less than or equal to 16 cm

Describe a way to calculate 304-81 mentally by using reasoning other that the common subtraction algorithm. Then write a coherent sequence of equations that correspond to your reasoning

Charlie runs at a speed of 3 yd./s about how many miles per hour does Charlie run

When 4 times a number n is decreased by 3 it's at most 21

What is the shape of the following distribution? {9, 10, 10, 11, 11, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 18, 19, 20}

Nadia puts $500 int a savings account. at the end of 1 year, she had earned $30 in intrest. What intrest rate was the bank paying

4th grade math patterns 18250, 18500, 19000, 20000 what's the next number?

3.871 round decimal to the underlined place value

You are interested in determining the effects of a recent coupon promotion on customer purchases at a local grocery store. You sample of 50 customer receipts one day after the coupon is distributed and find the customers' mean spending to be $97.

The function c (p) = 6⋅2p-1 represents the number of circles on page p in an artist's book. What does the value 6 represent in this situation? A) There are a total of 6 pages in the book. B) There are 6 circles on the first page of the book.