Does the equation y = 4.2x represent a proportional relationship

What's 28m^3+7m^2-8m-2

Whoever give me the answer to this i will mark them as the Brainest if x = 5, y = 2 and z = 3 then xz (4y - 2z) is A. 3445 B. 210 C. 30 D. 1,007

The probability of randomly drawing a red card from a bag that contains red, blue, and green cards is 3/10. What is the probability of not drawing a red card?

How many terms are in the algebraic expression - 7 + 12x^4 - 5y ^8 + x? Options: 1 2 3 4

4960.80 total including 6%, how much was the sales tax?

What is the simplest form of 3.3m²+6.6c-3.6c+4.9m²-2.3c

DuraBurn claims that the mean lifetime of its SuperGlo light bulbs is 904 hours. A researcher wants to perform a hypothesis test to determine whether the mean lifetime is actually less than this.

There are 120 bricks in a box. the bricks are red blue or green. there are 1/3 red bricks. 1/4 blue bricks

Round 82,528 to the nearest thousand

Rex's puppy is 5 years younger than his other dog. If the other dog is x years old, what is an expression for the puppy's age?