Mack opens his shop at 6:30 a. m. and he closes his shop at 10:30 p. m ... How long is his shop open for?

A firefighter is standing in front of a 24 step ladder. Every minute he climbs 4 steps then the next minute he climbs down 3 steps. If he starts a 9:00, what time will he reach the first step on the top rung of the ladder?

A farmer has 13 cows. a bolt of lightning kills all but 5 of them. how many cows survived?

What is it called when two angles add to 90?

Is water wet? (wrong answers only)

A number between 40 to 60. When it is divided by 5 it leaves a remainder of 3. When it is divided by 4, it leaves a remainder of 1.

Simplify (7-5i) (-3+9i) - (5+6i) ^2

Mariah is debating whether to use a straightedge and compass or a computer drawing program to complete a construction of a regular hexagon inscribed in a circle.

the equation y=0.25x describes a proportional relationship between x and y. what is the constant of proportional

Dan and Chris share in the profits of a toy store. If the total profit is $80,000 and c is the amount Chris receives, write an expression for the amount Dan receives.

Koto is walking at a velocity of 4.5 m/s south. She started at her house and traveled 15000 meters north, 5000 meters east, 20000 meters south, and then 5000 meters west. What is her time based on her velocity?