Which equations illustrate the commutative property of multiplication?

Choose exactly two answers that are correct.

A.

-1/2 • 3.4 = 3.4 • (-1/2)

B.

-8 • (5 + 3.1) = (5 + 3.1) • (-8)

C.

-4 • (5 + 7.1) = - 4 • 5 + (-4) • 7.1

D.

-8 • (4 • 1) = (-8 • 4) • 1

Evaluate 3f (2) =. what does this equal

Quick Computing Company produces calculators. They found that the cost c (x) of making x calculators is a quadratic function in terms of x.

Kara spends $16 on tubes of paint and paint brushes. A tube of paint costs $3 and a paint brush costs $.50. Kara purchases twice as many brushes as tubes of paint. How many tubes of paint and how many brushes did she buy?

The product is 0.016. One factor is 0.8. What is the other factor?

To solve a three-variable system of equations, you can use a combination of the elimination and substitution mehtods. True or False ... ?

What is the value of - a a=-4.2 A.-4.2 B. 4.2

What is the product of - 3/1 3 and - 8 / 7 8

It took Tony 9 trips to the store to bring home 2,376 pounds of bricks. The weight of the bricks was the same for each trip. What was the weight of the bricks of the bricks on each trip? A. 264 pounds B. 266 pounds C. 269 pounds D. 274 pounds

linear function in the form of y=mx+b for the line passing through 4.5, - 4.25 with y-intercept of 2.5

Fill in the missing information. Tim Worker is doing his budget. He discovers that the average miscellaneous expense is $45.00 with a standard deviation of $16.00. What percent of his expense in this category would he expect to fall between $38.