sat-dog

$k+12=336$

What is the solution to the given equation?

$66x=66x$

How many solutions does the given equation have?

The equation , where a and b are constants, has no solutions. Which of the following must be true?

I.

II.

III.

A rocket contained $\mathrm{467,000}$ kilograms (kg) of propellant before launch. Exactly $21$ seconds after launch, $\mathrm{362,105}$ kg of this propellant remained. On average, approximately how much propellant, in kg, did the rocket burn each second after launch?

Henry receives a $\$60.00$ gift card to pay for movies online. He uses his gift card to buy $3$ movies for $\$7.50$ each. If he spends the rest of his gift card balance on renting movies for $\$1.50$ each, how many movies can Henry rent?

The width of a rectangular dance floor is w feet. The length of the floor is 6 feet longer than its width. Which of the following expresses the perimeter, in feet, of the dance floor in terms of w ?

A librarian has 43 books to distribute to a group of children. If he gives each child 2 books, he will have 7 books left over. How many children are in the group?

In the given equation, k is a constant. If the equation has infinitely many solutions, what is the value of k ?

A science teacher is preparing the 5 stations of a science laboratory. Each station will have either Experiment A materials or Experiment B materials, but not both. Experiment A requires 6 teaspoons of salt, and Experiment B requires 4 teaspoons of salt. If x is the number of stations that will be set up for Experiment A and the remaining stations will be set up for Experiment B, which of the following expressions represents the total number of teaspoons of salt required?

If , what is the value of ?

$\frac{1}{4}\left(x+5\right)-\frac{1}{3}\left(x+5\right)=-7$

What value of $x$ is the solution to the given equation?

If $5x=20$, what is the value of $15x$?

What is the solution to the equation ?

If $x=40$, what is the value of $x+6$?

A candle is made of $17$ ounces of wax. When the candle is burning, the amount of wax in the candle decreases by $1$ ounce every $4$ hours. If $6$ ounces of wax remain in this candle, for how many hours has it been burning?