A calculator showed the answer to a multiplication problem as 2.8e-4.

Which expression is equivalent to 2.8e-4?

2.8 X 104

2.8 X (-4)

2.8¯4

2.8 X 10¯4

A chef planning a banquet thinks that 2 out of every 5 dinner guests will order his soup. He expects 800 guests. Use equivalent ratios to estimate how many cups of soup he should prepare.

Solve 1 - 2x - 1 = - 10

A 13 ft. ladder is leaning against a building 12 ft. up from the ground. How far is the base of the ladder from the building?

Given the equation 2x - y = 12, which equation is written in slope intercept form? y = - 2x + 12 y = 2x - 12 y = 2x + 12 y = - 2x - 12

Which number line represents all of the values of x for the equation x2 = 49?

6-?=3 complete the pairs to have a difference of 3 the first number of the pair will be the larger number?-4=3

What expression is equivalent to - 1/3 (6x+15) - 3

Every month Paolo earns $40 for walking his neighbors dog after school. How much does he earn from this job in one year?

What's the standard form for 7 + (8 times 1-10)

Karen earns $8 per hour at her job. She has $300 saved in the bank. She wants to save at least $2,700 to buy a car.