Karen purchased n notebooks. They were 5 dollars each. Write an equation to represent the total cost c that Karen paid.

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

In an improper fraction, is the numerator equal to, less than, or greater than the denominator

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.