Which statement shows the associative property of addition?

A.

If m + 3 = 18, then 18 = m + 3

B.

(u + 7) + 13 = u + (7 + 13)

C.

21 + 2y = 2y + 21

D.

3 · (5 · x) = (3 · 5) · x

A bacteria population of doubles in size every 5 hours. After 5 hours, the sample contains 2,000 Bactria. Which equation best models y, the population size after x hours?

Whats2+2:2*8+4+5:5*20

Simplify the expression 8x^-4 y^-8/-2xy^5 (Note ^ equals to the power of)

Why do basic exponential functions always have a horizontal asymptote at y = 0?

Solve by substitution method: x - y = 5,2x + 2y = 22

What is a common factor for the expression 24x^2+16x+144

The total cost of 6 pens and 3 folders. A folder costs $1.15 more than a pen.

An epidemiologist found five cases of "big toe cancer" in the Yukon Territory. Because there were only a few cases, the epidemiologist decided to conduct a matched case-control study to determine whether shoe size larger than 9 is a risk factor for

What does proportional mean?

Probability is the a. numerical measure of the likelihood that an event will occur. b. chance that an event will not happen. c. number of successes divided by the standard deviation of the distribution. d.